Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual 1900 23.24 21.74 27.36 41.7 51.93 62.96 67.72 67.53 62.63 51.18 39.32 24.86 45.18 1901 24.34 19.34 34.21 40.55 51.98 61.46 71.84 67.64 57.2 44.29 30.92 25.46 44.1 1902 22.84 21.23 35.81 41.95 53.48 60.06 66.54 61.44 56.2 47.79 42.92 26.86 44.76 1903 25.44 25.33 40.41 42.05 51.58 58.06 63.03 64.24 56.3 47.69 31.52 24.56 44.19 1904 18.74 19.43 32.51 39.25 53.18 60.46 63.68 61.64 56.5 41.89 34.02 21.96 41.94 1905 20.84 17.33 34.91 40.75 55.08 61.16 65.57 63.34 54.5 39.19 31.12 26.36 42.51 1906 29.94 23.43 30.01 42.15 52.68 64.96 64.94 70.34 63.3 48.79 37.72 29.86 46.51 1907 27.24 19.43 35.21 38.35 48.98 55.76 64 62.64 59.9 40.19 36.52 30.36 43.22 1908 26.04 22.83 37.51 43.15 55.68 59.16 65.33 64.74 55.7 48.39 33.62 28.46 45.05 1909 26.14 33.33 32.11 42.45 52.18 62.66 61.63 61.04 54.9 39.39 35.82 24.66 43.86 1910 24.34 24.93 39.81 47.15 50.88 59.76 65.12 64.24 61.8 49.29 33.42 21.86 45.22 1911 29.34 27.53 30.31 39.15 56.58 61.76 65.43 64.04 58.96 49.09 35.72 33.36 45.94 1912 16.54 20.63 30.91 44.75 55.98 60.96 67.44 64.24 62.4 47.19 36.92 30.26 44.85 1913 35.54 26.03 38.91 44.21 52.61 58.38 68.24 65.24 58.4 51.29 38.02 31.86 47.4 1914 29.24 16.43 28.61 38.95 50.18 58.16 62.34 61.94 48.7 47.09 30.22 25.26 41.43 1915 25.04 27.93 26.91 43.05 48.38 55.66 62.24 61.94 56.2 45.99 32.62 23.56 42.46 1916 27.74 22.33 25.21 39.95 52.58 54.46 65.34 61.44 50.2 40.59 31.82 23.16 41.24 1917 22.44 20.23 31.61 40.25 44.98 57.86 64.84 61.14 49.9 36.29 27.82 17.96 39.61 1918 13.94 21.93 31.51 38.95 54.28 56.66 58.54 63.34 49.4 45.39 31.52 30.66 41.34 1919 24.64 25.43 33.81 38.35 49.78 60.46 64.34 59.34 53 50.69 33.62 18.56 42.67 1920 18.14 22.73 29.01 38.35 44.08 55.96 61.24 63.24 53 42.69 33.52 28.66 40.89 1921 24.34 25.63 40.01 44.15 48.88 57.06 65.64 57.24 59.6 39.19 36.12 24.96 43.57 1922 18.14 26.93 32.91 40.15 51.08 61.16 63.64 58.14 54.3 41.89 32.93 25.26 42.21 1923 26.14 21.33 29.46 38.3 45.33 60.18 61.72 60.93 55.88 40.3 32.16 32.66 42.03 1924 21.44 24.63 29.96 35.7 47.63 57.29 60.86 60.87 50.99 39.16 31.97 25.06 40.46 1925 19.04 27.73 31.46 41 42.83 60.99 62.17 57.55 58.55 40.59 30.92 28.26 41.76 1926 21.34 25.73 25.46 36.7 46.33 53.98 62.79 63.89 56.96 43.22 29.85 23.16 40.79 1927 22.54 29.63 32.06 36.1 49.33 53.58 62.28 57.33 52.9 44.29 37.72 27.66 42.12 1928 21.54 24.13 30.52 36.56 46.49 57.37 64.44 64.04 51.7 43.99 34.92 25.06 41.73 1929 21.74 18.83 34.82 42.16 48.69 57.56 61.04 58.04 54.9 39.99 37.62 25.76 41.76 1930 22.34 26.13 30.02 37.26 50.19 58.16 63.04 59.84 58.5 38.79 33.02 24.96 41.86 1931 23.44 25.53 31.62 38.66 49.89 58.46 66.64 63.44 60.2 43.59 39.72 32.26 44.46 1932 35.94 28.03 28.02 36.76 48.79 58.06 62.64 60.44 53.9 44.89 30.52 26.06 42.84 1933 29.54 24.63 30.92 41.46 54.19 59.36 62.24 64.04 59.3 40.69 31.42 25.56 43.61 1934 26.54 8.53 25.77 38.28 50.5 61.97 66.26 60.78 58.56 41.08 35.74 25.06 41.59 1935 21.24 21.64 34.97 38.78 46 57.47 65.46 62.98 52.16 41.18 38.84 22.36 41.92 1936 19.34 15.54 35.37 36.98 49.7 57.67 62.26 62.58 56.86 44.88 31.34 27.26 41.65 1937 32.44 23.84 27.87 39.38 47.4 60.17 62.56 64.38 47.26 41.38 31.14 24.16 41.83 1938 23.84 27.04 33.27 40.38 49.9 58.37 63.86 63.68 55.26 41.08 32.64 25.76 42.92 1939 24.54 27.84 31.57 38.98 50.2 60.67 62.56 64.08 54.46 42.88 30.64 28.26 43.06 1940 11.04 24.84 28.27 35.98 49.8 58.97 60.86 61.78 50.26 40.48 34.64 29.26 40.52 1941 23.34 21.54 25.37 41.28 47.4 57.67 64.86 58.88 54.26 48.58 31.24 29.36 41.98 1942 22.34 22.74 34.07 41.08 53.1 61.37 62.86 62.18 54.76 45.38 35.24 22.76 43.16 1943 24.84 25.24 30.57 35.48 52.6 65.17 63.36 62.08 50.46 41.78 29.84 21.76 41.93 1944 23.44 25.24 29.57 39.08 53.8 59.87 61.86 60.18 56.66 40.68 33.44 22.96 42.23 1945 20.24 25.54 37.37 42.78 47 57.27 64.16 59.58 59.76 40.18 34.94 22.06 42.57 1946 24.74 24.24 36.37 37.78 50.3 56.37 60.56 58.18 53.26 43.98 35.34 26.06 42.27 1947 29.14 18.94 26.47 40.08 49.9 57.07 61.26 65.08 55.46 46.58 32.64 22.36 42.08 1948 17.44 21.34 33.17 41.68 51 58.87 62.96 61.08 52.66 41.88 38.04 26.66 42.23 1949 32.54 29.74 33.07 38.88 50.1 59.87 67.86 63.18 50.76 48.88 31.74 27.16 44.48 1950 33.64 26.64 28.17 36.58 51.2 56.97 60.96 58.18 53.86 43.78 31.04 21.66 41.89 1951 24.54 24.94 31.47 39.38 48.3 58.77 63.86 60.48 54.36 45.98 29.44 27.26 42.4 1952 28.84 27.84 30.57 42.88 49.1 60.47 65.16 59.68 52.56 36.58 34.04 26.76 42.87 1953 28.54 28.14 34.27 41.48 56.1 58.57 61.96 59.38 52.16 40.48 29.54 27.36 43.17 1954 22.64 28.04 30.97 43.48 47.3 56.87 59.26 60.48 53.66 44.78 30.84 25.96 42.02 1955 22.14 22.04 32.67 43.28 51.3 54.77 67.36 65.78 55.66 42.98 30.24 20.66 42.41 1956 22.44 27.54 29.07 38.18 46.8 57.97 63.36 61.08 53.06 45.88 33.84 33.16 42.7 1957 20.84 29.64 31.57 43.08 50.2 61.77 59.86 58.08 57.96 40.58 35.84 28.76 43.18 1958 23.44 19.84 29.97 41.68 49.8 56.27 66.46 61.18 51.56 42.38 34.74 18.36 41.31 1959 19.54 22.44 27.37 41.98 52.6 59.17 65.36 65.28 56.46 47.98 33.24 28.76 43.35 1960 27.34 26.34 21.17 42.48 48.9 57.57 59.46 64.36 56.76 41.68 31.84 15.76 41.14 1961 14.64 24.54 32.97 37.28 48.2 59.17 65.16 63.38 60.36 42.58 38.44 24.46 42.6 1962 22.64 23.74 28.97 40.48 52.8 59.47 60.26 60.48 51.16 43.98 31.64 20.06 41.31 1963 18.14 16.54 32.47 38.48 46.4 57.27 61.86 59.88 50.36 40.88 36.74 19.66 39.89 1964 21.64 23.04 30.67 38.98 47.8 58.27 64.16 59.28 52.36 37.58 33.34 28.56 41.31 1965 19.04 22.24 28.97 37.98 52.7 56.17 61.96 60.38 56.56 38.48 34.44 27.06 41.33 1966 20.94 24.24 30.97 37.48 48.6 55.37 62.43 62.18 53.16 39.28 32.74 25.56 41.08 1967 26.04 19.44 29.87 40.18 43.9 56.16 63.06 61.52 51.26 40.78 29.14 29.16 40.88 1968 17.34 20.64 32.57 38.38 46.6 57.27 62.46 63.57 53.26 44.58 37.04 24.72 41.54 1969 22.44 24.84 28.29 41.58 49.8 60.1 63.99 60.58 54.86 39.38 32.94 25.56 42.03 1970 15.34 22.24 28.37 38.38 50.8 57.57 63.86 61.31 56.68 47.33 35.17 26.37 41.95 1971 18.61 24.6 29.24 35.05 46.9 59.21 61.16 60.2 59.72 51.42 32.68 30.78 42.47 1972 25.66 21.35 31.43 36.48 48.63 55.84 63.43 59.35 56.78 40.4 31.36 31.63 41.86 1973 23.81 21.91 36.6 41.41 47.53 61.64 63.43 63.85 55.98 44.1 34.86 27.83 43.58 1974 28.01 21.41 33.1 40.71 48.13 56.74 61.83 62.75 55.08 38 33.06 27.83 42.22 1975 25.91 25.81 30.9 35.71 53.33 60.44 63.43 63.75 53.98 46.8 36.46 25.33 43.49 1976 19.81 28.11 35 41.01 47.83 60.84 60.43 59.65 52.88 41.2 27.46 20.53 41.23 1977 11.21 22.61 35.5 41.51 51.13 56.94 63.73 63.75 58.58 42.3 38.86 24.13 42.52 1978 18.21 14.21 28.5 38.91 49.83 58.14 62.13 66.35 55.98 39.9 35.56 26.33 41.17 1979 21.81 13.61 32.7 40.41 51.43 56.24 63.33 63.05 56.88 43.3 38.26 28.43 42.46 1980 24.21 19.51 29.6 41.91 51.63 55.04 65.03 64.85 58.38 41.2 32.06 23.83 42.27 1981 17.31 26.21 29.7 43.61 48.63 61.44 64.73 60.05 54.98 40.7 35.26 24.73 42.28 1982 15.21 24.71 30.9 37.01 52.03 58.04 63.93 59.65 54.68 44.2 36.86 32.83 42.51 1983 25.11 23.51 35.8 40.01 48.53 58.74 62.83 63.35 53.08 44.6 34.16 23.43 42.76 1984 17.81 29.21 27.6 39.61 49.73 60.14 63.33 63.95 51.58 51.2 31.76 33.33 43.27 1985 19.21 25.31 33.4 42.71 51.63 57.64 63.03 62.25 54.58 47.2 42.36 23.03 43.53 1986 21.91 24.21 30.7 40.91 52.03 58.74 66.33 61.05 57.18 45.1 33.26 28.03 43.29 1987 23.21 21.91 31.8 40.51 51.33 61.74 66.93 63.35 57.38 37.4 35.36 30.33 43.44 1988 17.31 24.21 32.51 39.71 51.33 57.84 65.83 65.65 53.08 37.5 34.66 25.13 42.06 1989 26.51 25.31 31.9 38.81 49.83 62.84 65.03 63.85 56.58 44.2 33.16 15.03 42.76 1990 30.71 29.81 35.3 41.71 50.63 58.54 66.03 63.15 54.28 47.6 35.46 29.63 45.24 1991 24.11 28.81 34.9 43.51 55.73 59.14 66.83 63.85 55.18 43.6 34.66 28.93 44.94 1992 24.71 26.81 30.5 40.31 47.03 55.94 65.13 59.25 55.08 40.1 35.76 28.33 42.41 1993 27.81 20.21 28.9 39.51 51.63 57.54 65.83 62.85 56.38 41.4 32.56 25.33 42.5 1994 15.51 21.21 30 43.91 45.93 61.84 66.73 60.35 52.88 39.3 36.56 29.13 41.95