YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN WINTER SPRING SUMMER AUTUMN 1ST HALF 2ND HALF 1871 35.3 39.8 47.7 58.9 65.4 74.0 76.0 77.5 63.7 58.7 45.2 33.8 56.3 m 57.3 75.8 55.9 53.5 59.2 1872 34.4 36.0 37.0 55.3 67.2 75.3 81.7 79.8 69.5 56.9 43.7 32.4 55.8 34.7 53.2 78.9 56.7 50.9 60.7 1873 34.2 35.6 40.4 52.0 62.3 73.9 79.6 76.6 68.3 55.3 41.5 40.7 55.0 34.1 51.6 76.7 55.0 49.7 60.3 1874 39.3 37.4 43.8 47.0 63.1 75.9 77.5 73.1 70.2 57.1 45.8 39.3 55.8 39.1 51.3 75.5 57.7 51.1 60.5 1875 30.3 29.4 39.6 49.5 64.1 73.7 78.2 73.7 66.2 56.0 43.4 38.6 53.6 33.0 51.1 75.2 55.2 47.8 59.4 1876 41.7 37.9 39.9 52.2 64.2 75.9 80.6 76.2 65.9 52.9 47.6 29.0 55.3 39.4 52.1 77.6 55.5 52.0 58.7 1877 32.3 40.6 41.5 53.7 62.7 73.7 78.9 77.9 68.2 60.2 48.4 43.8 56.8 34.0 52.6 76.8 58.9 50.8 62.9 1878 34.9 40.4 49.2 58.6 63.5 70.2 80.8 76.0 69.7 58.8 47.4 35.6 57.1 39.7 57.1 75.7 58.6 52.8 61.4 1879 31.5 32.2 43.8 52.8 65.7 73.3 79.0 75.3 65.2 63.0 46.7 41.9 55.8 33.1 54.1 75.9 58.3 49.9 61.9 1880 42.9 41.2 42.8 55.1 70.8 75.3 77.7 74.7 68.3 56.0 42.0 31.3 56.4 42.0 56.2 75.9 55.4 54.7 58.3 1881 30.3 34.6 41.8 51.7 67.8 70.8 78.9 77.2 77.2 63.5 49.3 43.8 57.2 32.1 53.8 75.6 63.3 49.5 65.0 1882 34.7 41.3 45.0 52.1 59.6 74.0 76.9 74.2 69.3 61.9 44.5 36.7 55.8 39.9 52.2 75.0 58.6 51.1 60.6 1883 32.3 39.1 39.5 52.2 64.2 74.6 77.1 73.2 65.4 57.9 48.4 39.0 55.2 36.0 52.0 75.0 57.2 50.3 60.2 1884 32.0 42.2 44.1 52.4 65.0 73.2 75.4 75.5 72.4 60.6 46.6 37.4 56.3 37.7 53.8 74.7 59.9 51.5 61.3 1885 34.0 28.5 35.4 54.3 63.2 72.6 79.9 74.9 67.2 55.8 45.8 37.6 54.0 33.3 51.0 75.8 56.3 48.0 60.2 1886 29.1 31.3 41.7 54.7 62.1 69.9 74.7 73.8 69.9 59.0 46.6 31.3 53.6 32.7 52.8 72.8 58.5 48.1 59.2 1887 32.4 38.2 37.9 51.3 67.6 72.3 80.6 73.6 65.0 56.3 45.3 37.2 54.7 34.0 52.3 75.5 55.5 50.0 59.7 1888 29.1 35.5 37.4 52.7 62.8 73.2 74.6 76.5 65.1 53.0 48.3 37.2 54.1 33.9 51.0 74.8 55.5 48.5 59.1 1889 38.7 30.6 44.1 54.8 65.7 71.2 76.5 73.7 66.3 54.1 47.9 45.1 55.6 35.5 54.9 73.8 56.1 50.9 60.6 1890 43.7 43.0 40.9 53.9 63.7 75.1 76.3 74.1 67.8 57.0 47.5 34.9 56.4 43.9 52.8 75.2 57.4 53.4 59.6 1891 37.3 41.6 39.0 56.0 62.1 71.7 71.6 74.5 70.5 54.4 43.9 43.0 55.4 37.9 52.4 72.6 56.3 51.3 59.7 1892 31.9 36.2 37.3 51.9 63.1 75.5 76.8 76.4 66.7 56.0 44.0 33.7 54.0 37.0 50.8 76.2 55.6 49.3 58.9 1893 24.3 34.0 40.4 52.5 61.6 72.5 76.8 75.6 65.9 57.1 43.9 38.1 53.4 30.7 51.5 75.0 55.6 47.6 59.6 1894 37.4 34.4 47.8 52.3 64.8 73.1 77.4 73.7 69.9 57.4 43.3 37.3 55.6 36.6 55.0 74.7 56.9 51.6 59.8 1895 31.4 26.2 40.2 52.8 62.5 74.3 73.1 77.2 71.7 53.4 47.0 38.7 54.0 31.6 51.8 74.9 57.4 47.9 60.2 1896 33.3 35.2 37.8 56.5 68.7 71.3 77.7 77.0 68.0 54.3 50.9 36.2 55.5 35.7 54.3 75.3 57.7 50.5 60.7 1897 30.8 36.6 45.2 52.6 63.4 69.9 77.0 74.9 68.9 58.5 46.2 38.5 55.2 34.5 53.7 73.9 57.9 49.8 60.7 1898 36.7 34.7 48.6 51.4 63.5 73.7 78.6 77.7 71.2 59.0 44.6 36.2 56.2 36.6 54.5 76.7 58.3 51.4 61.2 1899 32.7 28.0 41.6 53.6 64.8 75.3 77.1 76.0 66.5 59.0 46.7 36.8 54.8 32.3 53.3 76.1 57.4 49.3 60.4 1900 36.2 33.1 38.6 55.0 65.2 73.4 80.1 80.4 73.8 62.0 49.6 37.2 57.0 35.4 52.9 78.0 61.8 50.3 63.9 1901 34.9 29.5 43.8 50.7 61.8 72.6 80.4 76.7 68.4 56.7 41.8 35.2 54.4 33.9 52.1 76.6 55.6 48.9 59.9 1902 31.6 30.4 46.7 53.3 64.6 72.3 77.8 73.6 67.2 58.6 51.9 34.8 55.2 32.4 54.9 74.6 59.2 49.8 60.7 1903 33.6 37.8 49.6 54.4 65.2 67.2 77.2 71.9 68.2 58.4 43.2 33.0 55.0 35.4 56.4 72.1 56.6 51.3 58.7 1904 27.4 28.6 41.0 49.9 65.7 71.4 75.6 73.6 68.2 54.8 43.8 31.6 52.6 29.7 52.2 73.5 55.6 47.3 57.9 1905 30.8 27.3 44.6 54.2 65.1 72.2 77.0 74.2 69.0 58.2 45.8 38.4 54.7 29.9 54.6 74.5 57.7 49.0 60.4 1906 40.2 34.2 37.6 56.1 65.1 73.6 75.9 76.8 72.4 56.2 47.3 36.3 56.0 37.6 52.9 75.4 58.6 51.1 60.8 1907 36.5 28.8 47.0 47.8 59.0 66.7 76.6 73.6 69.9 53.2 45.4 39.0 53.6 33.9 51.3 72.3 56.2 47.6 59.6 1908 35.0 31.2 47.1 56.5 65.1 73.6 79.0 74.2 68.4 59.8 46.4 37.9 56.2 35.1 56.2 75.6 58.2 51.4 61.0 1909 35.6 42.6 41.8 53.9 64.5 74.1 76.0 74.4 67.7 54.8 51.5 33.2 55.8 38.7 53.4 74.8 58.0 52.1 59.6 1910 34.0 34.8 49.8 58.2 62.2 70.4 78.9 74.4 71.6 60.8 42.6 31.2 55.7 34.0 56.7 74.6 58.3 51.6 59.9 1911 38.4 36.6 40.8 51.0 69.4 73.4 79.2 76.2 70.4 58.3 43.8 41.5 56.6 35.4 53.7 76.3 57.5 51.6 61.6 1912 25.8 31.5 40.2 54.6 65.4 71.4 76.5 74.4 70.6 60.6 48.6 40.6 55.0 32.9 53.4 74.1 59.9 48.2 61.9 1913 43.5 36.2 48.8 55.6 64.9 73.7 78.6 75.2 68.4 59.6 49.0 41.4 57.9 40.1 56.4 75.8 59.0 53.8 62.0 1914 37.6 30.2 39.6 53.0 68.0 74.4 76.3 77.0 66.8 61.4 47.0 33.4 55.4 36.4 53.5 75.9 58.4 50.5 60.3 1915 36.0 38.4 39.4 59.2 62.2 70.6 76.9 74.2 71.5 59.6 47.0 35.4 55.9 35.9 53.6 73.9 59.4 51.0 60.8 1916 39.5 33.6 37.0 52.6 66.6 69.4 78.0 76.8 67.6 57.6 47.3 36.0 55.2 36.2 52.1 74.7 57.5 49.8 60.6 1917 35.3 32.2 43.2 53.8 59.2 73.0 77.2 76.4 64.5 52.6 44.6 28.4 53.4 34.5 52.1 75.5 53.9 49.5 57.3 1918 24.2 35.4 47.2 53.0 69.3 70.9 75.4 78.3 65.0 60.8 47.2 41.9 55.7 29.3 56.5 74.9 57.7 50.0 61.4 1919 38.2 37.6 46.2 52.9 64.9 73.4 78.0 74.6 70.4 63.0 47.4 33.2 56.6 39.2 54.7 75.3 60.3 52.2 61.1 1920 28.6 32.8 44.8 52.8 60.8 72.6 76.0 74.8 69.8 63.1 47.1 39.8 55.2 31.5 52.8 74.5 60.0 48.7 61.8 1921 37.0 39.0 54.6 58.6 63.1 75.0 80.2 73.9 74.5 57.8 48.1 37.2 58.2 38.6 58.8 76.4 60.1 54.6 62.0 1922 32.2 38.4 44.8 55.8 67.2 75.1 77.0 74.1 70.8 60.6 49.0 37.4 56.9 35.9 55.9 75.4 60.1 52.3 61.5 1923 36.6 32.4 44.5 53.6 63.8 76.7 76.7 74.8 70.4 57.4 46.4 45.4 56.6 35.5 54.0 76.1 58.1 51.3 61.9 1924 34.8 34.6 43.0 52.2 60.2 71.2 76.1 76.0 65.4 59.4 47.0 36.8 54.7 38.3 51.8 74.4 57.3 49.3 60.1 1925 33.0 41.8 46.1 56.4 61.2 78.7 77.2 74.7 73.4 52.7 45.4 37.3 56.5 37.2 54.6 76.9 57.2 52.9 60.1 1926 34.5 35.6 39.8 51.6 64.5 69.7 77.4 76.8 69.6 58.0 45.6 33.6 54.7 35.8 52.0 74.6 57.7 49.3 60.2 1927 34.2 42.1 47.4 51.8 63.2 69.3 77.2 71.0 70.3 61.4 51.6 40.0 56.6 36.6 54.1 72.5 61.1 51.3 61.9 1928 36.3 37.6 43.8 51.9 63.0 71.0 79.2 77.8 65.8 60.7 50.3 41.0 56.5 38.0 52.9 76.0 58.9 50.6 62.5 1929 35.4 35.6 50.2 57.4 64.3 73.3 77.4 74.4 70.4 56.2 48.3 38.7 56.8 37.3 57.3 75.0 58.3 52.7 60.9 1930 36.2 42.0 45.2 52.6 68.4 76.2 80.6 77.6 76.2 57.6 47.5 37.0 58.1 39.0 55.4 78.1 60.4 53.4 62.8 1931 38.1 39.6 41.9 53.8 65.2 74.5 81.0 77.0 76.0 63.4 54.7 45.7 59.2 38.2 53.6 77.5 64.7 52.2 66.3 1932 47.4 42.8 40.3 52.8 64.4 73.6 78.3 78.4 71.1 58.6 45.8 40.9 57.9 45.3 52.5 76.8 58.5 53.6 62.2 1933 43.5 38.0 42.8 54.7 67.1 76.0 77.2 77.0 73.0 58.0 45.2 38.2 57.6 40.8 54.9 76.7 58.7 53.7 61.4 1934 39.0 24.3 40.5 53.8 67.2 77.8 81.4 74.7 71.3 57.0 50.5 37.7 56.3 33.8 53.8 78.0 59.6 50.4 62.1 1935 33.2 35.0 49.4 52.6 62.2 73.6 79.4 76.8 67.3 58.5 50.4 32.8 55.9 35.3 54.7 76.6 58.7 51.0 60.9 1936 30.8 29.7 48.8 51.8 67.8 73.2 78.6 78.2 71.4 60.0 45.6 40.8 56.4 31.1 56.1 76.7 59.0 50.4 62.4 1937 43.5 36.7 41.9 53.2 66.8 75.2 78.3 78.4 67.2 56.2 47.6 38.0 56.9 40.3 54.0 77.3 57.0 52.9 61.0 1938 36.2 40.4 49.2 56.7 63.6 73.1 79.1 80.0 68.0 59.8 50.4 39.4 58.0 38.2 56.5 77.4 59.4 53.2 62.8 1939 38.0 41.8 45.2 53.4 68.4 75.5 77.2 80.0 71.2 59.6 47.4 40.8 58.2 39.7 55.7 77.6 59.4 53.7 62.7 1940 26.0 37.4 40.0 50.2 64.4 75.0 78.8 73.5 68.2 55.8 48.4 43.0 55.1 34.7 51.5 75.8 57.5 48.8 61.3 1941 34.7 34.0 40.1 60.4 68.3 73.6 78.4 77.0 73.2 65.1 52.0 42.5 58.3 37.2 56.3 76.3 63.4 51.9 64.7 1942 35.8 34.4 47.0 58.8 69.0 74.4 79.7 75.4 71.2 60.7 49.0 34.9 57.5 37.6 58.3 76.5 60.3 53.2 61.8 1943 35.0 38.8 44.6 50.6 66.8 79.8 78.4 79.1 68.5 56.6 47.0 37.3 56.9 36.2 54.0 79.1 57.4 52.6 61.2 1944 38.2 38.0 41.8 53.0 70.6 74.7 79.7 77.4 70.6 57.8 48.0 34.8 57.0 37.8 55.1 77.3 58.8 52.7 61.4 1945 30.4 38.6 55.7 58.4 63.2 75.0 77.0 75.8 72.6 58.7 49.6 33.4 57.4 34.6 59.1 75.9 60.3 53.6 61.2 1946 37.3 38.2 53.0 55.6 65.8 72.2 77.3 73.2 71.0 62.2 52.4 42.4 58.4 36.3 58.1 74.2 61.9 53.7 63.1 1947 41.4 31.8 40.4 55.8 64.5 71.6 76.7 78.6 70.0 64.8 46.4 37.0 56.6 38.5 53.6 75.6 60.4 50.9 62.3 1948 29.3 36.6 47.8 55.0 65.0 73.9 78.7 76.6 70.2 56.7 53.0 40.8 57.0 34.3 55.9 76.4 60.0 51.3 62.7 1949 42.3 43.9 46.6 55.0 65.8 75.6 81.4 78.1 67.2 64.2 48.8 41.5 59.2 42.3 55.8 78.4 60.1 54.9 63.5 1950 46.9 37.5 41.1 51.9 63.0 73.8 77.2 73.9 65.1 58.0 45.1 32.3 56.7 42.0 52.0 75.0 56.1 52.4 58.6 1951 36.8 36.0 42.9 52.9 62.2 71.2 76.9 74.4 68.1 59.9 41.2 37.8 55.0 35.0 52.7 74.2 56.4 50.3 59.7 1952 38.3 38.7 41.0 55.6 62.1 74.4 78.7 74.7 66.8 52.9 45.8 37.6 55.6 38.3 52.9 75.9 55.2 51.7 59.4 1953 38.8 39.6 44.7 53.0 65.8 72.5 76.7 74.3 67.7 57.7 45.9 39.1 56.3 38.7 54.5 74.5 57.1 52.4 60.2 1954 33.0 40.9 41.9 57.1 60.8 72.4 76.6 73.2 70.2 59.6 43.4 35.0 55.3 37.7 53.3 74.1 57.7 51.0 59.7 1955 32.3 34.4 44.9 55.9 65.2 68.4 81.2 78.1 68.2 58.3 43.1 31.3 55.1 33.9 55.3 75.9 56.5 50.2 60.0 1956 32.7 38.7 40.7 51.6 61.3 71.9 74.7 74.2 65.5 58.0 45.4 43.6 54.9 34.2 51.2 73.6 56.3 49.5 60.2 1957 30.3 39.0 43.5 56.2 64.9 74.8 76.4 73.1 69.6 53.2 47.2 39.1 55.6 37.6 54.9 74.8 56.7 51.5 59.8 1958 32.4 28.9 39.8 54.9 62.9 68.8 77.1 73.5 66.7 57.0 47.2 29.9 53.2 33.5 52.5 73.1 57.0 48.0 58.6 1959 32.0 35.7 42.5 56.6 67.3 73.6 76.7 77.4 70.7 59.4 44.5 39.0 54.7 32.5 55.5 75.9 58.2 51.3 61.3 1960 36.0 36.2 33.4 58.4 61.6 72.1 74.6 76.9 69.1 56.6 46.9 28.4 54.2 37.1 51.1 74.5 57.5 49.6 58.8 1961 27.6 37.0 45.0 50.0 60.3 71.4 76.5 74.6 73.2 57.7 47.6 33.4 54.5 31.0 51.8 74.2 59.5 48.6 60.5 1962 32.4 32.3 42.2 53.9 66.2 72.3 73.6 74.6 64.8 57.7 41.5 30.9 53.5 32.7 54.1 73.5 54.7 49.9 57.2 1963 28.8 27.8 45.9 54.0 61.4 73.1 76.3 72.9 64.0 58.6 47.3 28.8 53.3 29.2 53.8 74.1 56.6 48.5 58.0 1964 33.8 33.2 44.4 50.9 65.3 72.7 77.0 73.5 68.1 53.3 49.8 39.1 55.1 31.9 53.5 74.4 57.1 50.1 60.1 1965 30.8 34.9 39.2 50.3 66.9 70.1 76.8 75.5 70.8 53.9 45.6 38.3 54.4 34.9 52.1 74.1 56.8 48.7 60.2 1966 29.8 30.5 43.3 49.5 61.7 72.9 78.9 76.5 66.7 53.4 46.4 35.6 53.8 32.9 51.5 76.1 55.5 48.0 59.6 1967 37.4 30.7 41.8 54.0 57.0 72.7 75.2 73.4 65.3 55.3 42.0 37.3 53.5 34.6 50.9 73.8 54.2 48.9 58.1 1968 29.2 32.2 46.6 54.0 59.7 72.6 78.2 78.7 70.3 59.7 48.2 34.6 55.3 32.9 53.4 76.5 59.4 49.1 61.6 1969 31.7 34.9 40.7 56.2 65.5 74.9 77.4 76.5 69.5 57.7 46.1 35.2 55.5 33.7 54.1 76.3 57.8 50.7 60.4 1970 27.8 35.4 40.4 53.3 66.6 73.0 77.2 77.4 73.7 61.5 48.6 38.2 56.1 32.8 53.4 75.9 61.3 49.4 62.8 1971 30.0 37.4 41.8 52.7 61.2 74.0 76.5 74.2 70.9 62.9 46.4 43.7 56.0 35.2 51.9 74.9 60.1 49.5 62.4 1972 37.6 34.3 43.6 51.6 62.7 68.1 76.9 75.4 69.8 53.5 43.2 40.4 54.8 38.5 52.6 73.5 55.5 49.7 59.9 1973 34.6 34.3 48.3 53.1 59.6 73.5 75.9 76.9 69.8 58.2 47.3 37.3 55.7 36.4 53.7 75.4 58.4 50.6 60.9 1974 37.9 33.8 45.2 55.3 61.9 68.5 76.5 75.0 67.5 55.3 48.2 40.3 55.4 36.3 54.1 73.3 57.0 50.4 60.5 1975 38.5 39.1 42.1 50.4 66.3 73.0 76.1 77.9 66.0 60.7 51.9 37.2 56.6 39.3 52.9 75.7 59.5 51.6 61.6 1976 30.8 44.1 48.1 56.9 62.1 74.8 75.0 73.9 67.5 52.9 40.9 32.6 55.0 37.4 55.7 74.6 53.8 52.8 57.1 1977 22.9 36.5 50.0 57.9 66.7 71.4 79.0 77.7 72.1 56.0 49.2 35.6 56.3 30.7 58.2 76.0 59.1 50.9 61.6 1978 29.2 27.3 41.7 54.2 62.4 73.1 75.9 78.1 69.7 56.1 48.7 40.2 54.7 30.7 52.8 75.7 58.2 48.0 61.5 1979 33.1 25.6 48.5 53.1 64.7 70.7 75.9 75.7 68.8 55.7 50.6 40.3 55.2 33.0 55.4 74.1 58.4 49.3 61.2 1980 33.8 31.5 41.5 55.7 65.5 71.3 78.2 78.7 72.2 55.3 44.2 35.5 55.3 35.2 54.2 76.1 57.2 49.9 60.7 1981 27.9 38.8 41.9 57.0 62.2 74.3 77.3 74.4 67.7 53.2 46.2 34.5 54.6 34.1 53.7 75.3 55.7 50.4 58.9 1982 25.5 35.8 42.9 50.7 66.1 69.4 77.1 73.0 67.3 56.3 48.4 42.0 54.6 31.9 53.2 73.2 57.3 48.4 60.7 1983 34.6 34.7 45.4 51.8 61.5 72.1 78.7 78.0 69.5 57.3 47.1 33.2 55.3 37.1 52.9 76.3 58.0 50.0 60.6 1984 28.5 41.7 38.2 51.5 61.3 73.4 73.9 75.0 64.8 62.2 43.9 44.1 54.9 34.5 50.3 74.1 57.0 49.1 60.7 1985 29.3 38.7 46.0 57.9 65.1 70.4 76.4 74.5 69.4 58.8 52.4 33.8 56.1 37.4 56.3 73.8 60.2 51.2 60.9 1986 33.2 32.9 45.0 53.5 66.7 74.4 79.4 73.1 68.9 58.9 44.8 38.2 55.8 33.3 55.1 75.6 57.5 51.0 60.6 1987 32.5 34.3 46.2 53.1 65.0 74.5 80.0 76.1 69.3 51.5 47.8 39.8 55.8 35.0 54.8 76.9 56.2 50.9 60.8 1988 28.7 35.9 45.1 52.0 64.0 73.0 80.3 78.5 66.8 51.3 48.1 36.3 55.0 34.8 53.7 77.3 55.4 49.8 60.2 1989 37.9 36.5 43.8 52.5 62.0 73.9 76.0 74.4 69.0 58.3 44.8 25.4 54.5 36.9 52.8 74.8 57.4 51.1 58.0 1990 42.0 42.3 47.6 54.8 62.3 73.3 78.4 74.6 67.3 60.7 49.6 42.2 57.9 36.6 54.9 75.4 59.2 53.7 62.1 1991 35.5 40.7 46.7 55.9 70.6 74.6 79.5 77.8 69.0 57.8 45.8 38.7 57.7 39.5 57.7 77.3 57.5 54.0 61.4 1992 34.6 37.1 41.3 52.0 60.8 70.1 77.4 72.3 67.7 54.3 47.2 38.9 54.5 36.8 51.4 73.3 56.4 49.3 59.6 1993 37.9 31.4 39.4 52.5 65.0 72.2 80.2 76.7 68.8 55.5 46.5 36.2 55.2 36.1 52.3 76.4 56.9 49.7 60.7 1994 27.1 34.0 43.0 59.6 60.6 77.2 80.1 74.1 68.1 56.8 51.9 42.6 56.3 32.4 54.4 77.1 58.9 50.3 62.3 1995 39.0 33.2 47.8 55.2 64.5 74.5 81.5 80.1 70.4 61.1 42.6 33.9 57.0 38.3 55.8 78.7 58.0 52.4 61.6 1996 31.7 35.7 39.9 54.0 60.6 73.3 74.3 73.2 67.8 55.6 40.2 39.6 53.8 33.8 51.5 73.6 54.5 49.2 58.5 1997 32.8 41.0 45.5 51.6 59.5 70.1 77.3 74.0 67.3 56.5 43.7 38.4 54.8 37.8 52.2 73.8 55.8 50.1 59.5 1998 40.9 41.7 45.9 55.2 66.5 71.7 76.6 75.7 71.8 56.3 46.1 41.1 57.5 40.3 55.9 74.7 58.1 53.7 61.3 1999 35.1 37.6 41.8 53.2 64.2 71.5 80.0 75.7 68.2 53.9 49.9 39.1 55.9 37.9 53.1 75.7 57.3 50.6 61.1 2000 32.5 38.1 48.5 52.9 64.7 72.8 72.7 73.4 65.3 57.1 44.2 30.0 54.4 36.6 55.4 73.0 55.5 51.6 57.1 2001 33.1 38.5 41.8 55.4 63.4 74.1 72.8 77.0 65.2 56.0 50.7 42.1 55.8 33.9 53.5 74.6 57.3 51.1 60.6 2002 39.1 39.3 45 56.7 62.2 73.8 78.6 78.4 69.5 56.0 44.4 34.3 56.4 40.2 54.6 76.9 56.6 52.7 60.2 2003 28.3 30.2 43.9 52.7 59.3 69.8 75.6 76.3 68.0 55.1 50.6 36.4 53.9 30.9 52.0 73.9 57.9 47.4 60.3 2004 27.8 34.8 45.6 54.7 69.8 70.9 76.2 74.2 69.4 55.4 48.5 37.5 55.4 33.0 56.7 73.8 57.8 50.6 60.2 2005 34.1 36.7 40.6 55.2 59.2 73.6 78.0 77.6 72.0 57.8 48.1 34.0 55.6 36.1 51.7 76.4 59.3 49.9 61.3 2006 41.6 36.1 45.6 57.5 63.4 73.1 79.9 78.4 65.5 55.2 49.6 42.4 57.4 37.2 55.5 77.1 56.8 52.9 61.8 2007 38.7 29.1 45.2 51.5 65.5 73.8 76.9 77.5 70.6 63.4 46.2 37.8 56.4 36.7 54.1 76.1 60.1 50.6 62.1 2008 35.4 37.1 45 55.8 60.5 75.3 77.5 73.6 69.4 55.6 45.4 38.5 55.8 36.8 53.8 75.5 56.8 51.5 60.0 2009 29.3 37.5 43.1 54.9 63.7 71.4 74.7 76.6 66.7 53.9 2010 NORM 32.3 35.5 43.7 53.2 62.9 71.8 76.5 74.5 67.4 55.4 45.5 36.7 54.6 34.8 53.3 74.3 56.1 1971-2000 YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN WINTER SPRING SUMMER AUTUMN 1ST HALF 2ND HALF