Sahel rainfall index (non-dimensional*100). 1 -999 1898 2004 Sahel rainfall index (non-dimensional*100). Time series standardized by month with respect to 1898-1993. http://jisao.washington.edu/data/sahel/ 1898 2004 1 jan feb mar apr may jun jul aug sep oct nov dec 1898 -13 -47 -13 -30 -34 62 -107 62 -102 -98 -19 -24 1899 -12 -47 -13 656 -34 250 60 -48 -77 177 -19 70 1900 -13 174 -13 -30 -34 -4 65 -131 213 -43 -19 -24 1901 -13 -47 -13 -30 -34 250 72 -99 31 -105 -11 -24 1902 -13 -47 -13 -30 829 -70 -42 -24 -47 65 -19 -24 1903 -13 -47 -13 -30 -34 -32 -182 107 -67 -105 -19 -24 1904 -13 -47 -13 -30 -34 -51 5 183 -126 -103 38 147 1905 -13 273 967 -30 -34 52 23 -5 -173 304 -19 18 1906 -13 -47 -13 -30 5 43 296 354 -4 -45 -15 840 1907 -12 -35 -13 -54 -69 134 15 -108 176 -16 -14 -24 1908 -13 -35 -13 -50 -55 12 -5 82 -10 -10 -19 65 1909 -13 -35 -13 7 -1 105 226 79 -30 59 -19 -24 1910 -13 -35 -13 -54 -17 -103 47 -86 -86 -104 -19 -24 1911 -13 -35 -13 -38 216 -54 -1 -79 -88 -68 -17 -24 1912 -13 -35 -13 -27 -49 -30 -49 29 -105 -76 -19 -24 1913 -8 -35 -13 -54 -63 10 -79 -35 -136 -99 -19 -24 1914 -13 -35 -13 -54 -11 45 -54 -12 -82 43 6 -24 1915 -13 -47 -13 -30 -34 -80 513 338 -24 -78 -19 -24 1916 -13 27 -13 -30 -34 99 -45 -83 -85 -80 -19 -24 1917 -13 -47 -13 -30 -34 476 -127 171 272 -110 -19 -24 1918 -12 -41 -13 -35 -42 162 -59 182 62 178 -19 -27 1919 -14 -42 -12 -34 24 -4 97 -139 -31 -56 -19 -29 1920 -14 -1 -12 -42 -7 -44 -24 64 26 -15 -18 -27 1921 -12 -36 -11 -17 -26 -50 -139 -47 31 11 956 -28 1922 6 -16 -12 8 -36 -56 13 -1 87 25 -7 -20 1923 3 -40 -10 75 -32 -64 -10 48 -47 -11 -18 -23 1924 21 630 -10 2 76 69 67 38 74 -86 -9 -24 1925 -8 -40 -11 -52 -15 -61 -18 -9 -45 102 -14 -29 1926 -14 -39 -13 -53 -8 12 -6 -93 -101 -99 -12 -29 1927 -13 -11 -13 39 67 172 -102 174 40 126 -4 -13 1928 -13 -35 -11 74 -36 -51 -59 109 -79 75 -18 -29 1929 -9 -38 -3 -26 -17 174 -60 37 -32 0 -16 3 1930 11 -42 -13 12 19 -33 13 41 73 -67 -5 -29 1931 -14 62 -12 222 -13 -47 -5 -118 44 -86 -14 -11 1932 964 20 -12 -56 43 -39 17 -20 6 51 -17 -29 1933 -11 -38 -12 -10 68 209 109 57 -23 -58 42 -29 1934 -13 -41 -8 -35 -74 -4 -18 -2 -23 -13 -14 -29 1935 80 19 -6 -28 -52 87 118 130 -32 37 -11 -29 1936 -14 -15 -12 57 71 73 84 126 9 -18 24 -29 1937 -13 -40 -12 -62 48 -86 18 -50 -5 -2 -8 -29 1938 -13 -40 55 -41 -33 -99 44 -45 16 16 93 -29 1939 -13 -3 -5 -55 11 -101 -12 55 107 120 -16 -26 1940 -8 -40 -11 -31 -5 45 -73 8 -3 144 -16 -28 1941 -13 -37 -10 -41 23 -70 -21 -145 12 -89 -4 -26 1942 -13 23 -13 20 22 -128 -57 6 -152 -29 11 52 1943 -13 46 -11 -31 66 -28 -61 79 142 30 -19 322 1944 -14 -41 -12 519 -81 -74 -81 -1 75 74 -18 -22 1945 -13 -39 -13 -38 -14 -96 68 19 155 23 -14 -30 1946 -11 -39 -11 -44 -77 -57 24 8 79 151 -19 -30 1947 -13 8 -13 -39 -66 -78 -55 -4 69 -46 3 -29 1948 -13 -19 -12 78 40 209 20 22 -109 -89 -9 -29 1949 -13 -35 -10 17 -68 -81 -5 2 -141 -54 -1 59 1950 -8 -31 -13 -15 -32 -59 59 189 138 97 -14 -18 1951 -10 -33 -4 -52 93 -70 -12 15 203 360 12 -28 1952 -13 -38 -13 71 31 -50 30 64 288 66 -19 -26 1953 -13 -34 -8 -56 56 115 126 -18 50 -38 -16 -14 1954 -12 362 -7 48 -26 28 117 107 -20 15 35 -29 1955 -8 39 -8 13 1 71 158 18 144 173 -16 2 1956 -11 81 -11 -26 -51 -49 78 28 50 26 -15 67 1957 -12 -39 -9 -7 116 83 56 17 110 164 -7 -1 1958 -10 -38 -12 -29 -41 45 21 150 43 -21 14 -27 1959 -6 76 -11 -20 25 -68 -32 61 61 -82 -14 -29 1960 -13 -39 -10 -50 -13 -6 86 -43 59 -50 -11 8 1961 -8 -42 -12 -55 -39 31 87 12 55 -116 -20 -29 1962 -14 -24 -12 71 -34 34 72 78 35 81 19 -28 1963 -13 45 -13 42 -21 -38 -16 29 -19 232 -19 -29 1964 -9 -39 -9 44 14 36 88 88 24 -45 -13 213 1965 2 30 -13 -33 -16 113 -78 6 84 -45 -20 -29 1966 -13 -40 -11 -28 -40 -18 -146 -57 165 176 -18 -14 1967 -13 -10 -7 -19 -55 -57 0 44 240 -13 -17 -4 1968 -13 337 -10 157 -9 -9 -24 -126 -17 -48 -16 -29 1969 -13 -37 -12 -20 -51 -54 132 -16 13 160 -10 -29 1970 -13 -40 -11 -17 -29 -123 1 -17 40 -101 -18 -29 1971 -13 -20 -6 -35 -41 -96 -20 -65 -92 -104 -18 -8 1972 -9 -38 -13 -15 7 63 -150 -166 -129 10 15 9 1973 -13 -40 -13 -37 -54 -60 -92 -81 -127 -90 -19 -29 1974 -13 -41 -12 -33 -26 -76 41 8 8 -51 -19 -28 1975 -13 -33 -10 -39 14 -54 63 5 -44 -76 -11 -27 1976 -13 -34 -12 -39 62 -38 -81 -123 10 240 -13 -20 1977 -6 -41 -11 -40 -39 -80 -16 -77 -4 -91 -16 -6 1978 -13 -40 -1 179 2 -103 124 -110 -23 6 -7 -17 1979 -5 -42 -11 -29 11 195 -60 -156 -51 -23 -10 -27 1980 -13 -39 -13 -38 -77 -12 -91 -12 -101 -50 -17 -30 1981 -13 -46 -9 10 81 -37 -57 -78 -58 -56 -19 -29 1982 -13 191 -8 12 -46 -99 -130 -107 -186 -5 -19 -29 1983 -13 -43 -11 -43 -48 -35 -110 -159 -160 -106 -17 -28 1984 -13 -41 -9 -22 79 -91 -141 -177 3 -69 -17 23 1985 -13 -5 -7 -47 -77 23 -53 -89 -108 -111 -18 15 1986 -13 -37 -9 59 63 -96 -140 -124 92 -17 -12 -29 1987 -13 -34 -10 -57 -51 -67 -158 -110 -59 -59 -18 -29 1988 -13 -13 -13 8 -50 -104 -54 -10 52 -90 -19 -28 1989 -13 -41 -6 -37 -51 -17 -54 44 -80 -17 -17 40 1990 -12 -41 -10 -17 -30 -63 -61 -118 -90 -60 -17 -28 1991 -13 51 -10 -41 108 -4 82 15 -150 110 -22 -34 1992 -5 192 -13 -24 52 -77 -23 -64 -97 -67 0 -27 1993 -13 -22 -9 -50 -88 -4 -79 -100 -87 -66 -18 -1 1994 -13 96 -7 -32 -18 -83 -16 58 95 173 -18 -20 1995 -13 -45 -1 58 -20 -88 -53 38 -68 -43 -19 88 1996 -13 -40 -13 -7 29 13 -94 -96 56 36 -19 -29 1997 -11 -41 132 -8 -11 50 -91 -79 -107 -46 -5 -29 1998 34 2468 -13 -30 42 47 -119 -8 174 23 -19 -28 1999 -13 -40 172 -43 17 -107 21 71 135 74 1175 -29 2000 -12 -36 -13 -29 -21 -10 4 -82 -151 6 -21 -29 2001 -13 -45 -10 -48 758 -27 52 -47 161 -103 -13 -28 2002 81 -47 54 -48 -49 -97 -49 -104 -62 169 -17 -8 2003 53 -44 -3 9 -32 121 -10 9 -4 145 -12 -29 2004 -5 44 -13 -11 48 -11 -79 -57 -167 -97 24 3741