year Jan. Feb. March April May June July Aug. Sep. Oct. Nov. Dec. 1948 0.742 0.629 1.661 1.630 -0.752 0.208 0.050 0.735 0.669 0.129 0.393 1.364 1949 1.683 0.947 -0.645 2.096 0.049 0.413 0.616 0.573 -0.303 0.111 -1.678 -0.595 1950 -0.347 0.561 -0.369 0.329 0.427 0.561 -1.612 -1.355 0.096 -0.880 -0.350 -0.859 1951 0.865 0.795 -1.416 -0.473 -1.085 -0.108 0.306 0.515 -1.631 -0.148 0.669 1.441 1952 0.298 -1.054 -1.053 0.349 -0.991 -1.392 2.225 0.677 -0.941 -0.581 -1.490 -0.823 1953 -0.288 -0.058 1.555 -1.348 -1.794 0.508 0.808 0.217 1.284 -0.237 -0.279 0.766 1954 0.147 0.732 0.615 -0.518 -2.769 -0.757 0.836 -0.921 0.703 -0.479 -0.185 0.429 1955 0.088 -0.415 -1.075 -0.254 0.271 -0.100 0.897 1.707 -0.553 0.646 -0.143 0.157 1956 -0.430 -1.451 0.452 -1.221 0.972 0.853 -0.268 -0.950 -0.122 1.390 -0.621 -0.943 1957 0.753 -1.364 -1.488 -0.313 -1.780 -1.103 -0.596 0.013 -0.529 0.425 -0.467 1.504 1958 -0.385 -1.448 -1.816 -0.335 -0.330 -1.592 -1.625 -1.196 0.634 0.564 0.274 -1.341 1959 -1.276 1.357 0.927 -0.451 -0.663 -0.657 0.159 -1.500 -0.937 -1.507 -2.063 0.241 1960 -1.345 -0.849 -1.124 -0.674 -1.962 -0.791 -1.820 -2.108 -0.498 -0.274 -0.572 -0.685 1961 -0.742 0.591 0.552 -0.809 -0.013 -0.319 -0.541 -0.654 0.448 -0.388 0.756 -0.546 1962 0.932 -0.013 -1.929 1.213 0.615 -0.525 -0.430 -0.308 0.717 0.429 -0.836 0.136 1963 -0.847 -0.720 0.948 -0.317 0.087 -1.250 0.306 -0.529 0.620 0.858 -0.059 -0.610 1964 1.115 -0.220 0.706 0.955 2.004 -0.269 1.052 -2.074 -0.879 -0.005 0.026 0.005 1965 -0.082 -1.098 -0.350 0.319 0.391 -1.331 -1.797 -1.376 -1.574 1.091 -1.875 0.462 1966 -0.419 -0.159 -0.225 -1.632 1.698 0.539 -0.253 -1.017 0.185 0.309 0.574 -1.394 1967 0.530 1.217 1.262 1.912 0.281 0.550 1.029 0.209 0.225 1.045 0.577 -0.136 1968 -0.427 -1.252 1.431 0.592 0.293 -0.540 -1.326 -0.848 -0.797 -0.186 -0.844 -0.419 1969 -1.633 -1.519 -0.049 0.257 -1.083 -1.367 0.513 -0.423 -0.092 -0.898 0.365 -1.509 1970 -1.476 -0.774 -1.827 0.510 0.587 1.560 -0.416 0.413 -0.274 0.082 0.479 -0.106 1971 0.525 -0.950 -0.930 -0.680 0.774 -1.879 -0.808 0.698 0.706 1.991 1.359 0.741 1972 0.175 0.112 0.262 0.963 -0.129 -0.825 -0.024 0.581 -1.586 0.486 -0.245 0.644 1973 0.981 0.768 0.637 -1.415 0.246 0.333 0.232 0.615 0.457 0.424 -0.457 0.403 1974 -0.454 0.037 -0.722 -0.352 -0.799 -0.045 -0.649 -0.982 -0.765 -1.225 0.169 0.721 1975 1.416 -0.364 0.280 -0.063 -0.301 0.059 0.341 0.573 1.636 0.327 1.174 1.943 1976 0.419 1.310 0.194 0.426 -0.323 -0.213 -0.930 1.438 -0.721 -1.188 -0.032 -1.442 1977 -2.809 -1.019 0.758 1.370 -0.325 -0.184 -1.173 -2.030 1.738 0.107 0.085 -0.071 1978 0.275 -1.457 0.212 -1.379 -0.287 0.262 -0.898 -0.602 -0.858 1.049 2.216 -0.559 1979 -0.583 0.637 -0.589 -0.898 0.022 1.378 0.041 -1.054 -0.742 -1.036 0.838 1.539 1980 -1.166 -1.035 -1.042 -0.526 -1.586 1.066 -0.169 0.848 0.281 -1.411 0.077 0.219 1981 0.173 -0.053 -1.107 0.356 0.359 -0.398 1.762 0.547 -1.497 -2.320 -0.661 -0.414 1982 -0.006 -0.036 0.572 1.483 0.114 -1.474 0.281 0.216 1.216 -0.284 0.371 0.913 1983 0.977 -0.657 -0.678 -0.435 -0.573 1.045 0.281 1.474 0.154 1.080 0.326 -0.067 1984 0.475 -0.101 -1.257 -0.206 0.530 0.034 0.053 0.883 -1.261 -1.640 -0.591 0.359 1985 -1.592 -1.140 0.858 0.585 -0.622 -1.417 -1.590 0.206 -0.084 0.592 -1.501 -2.103 1986 0.108 -1.450 1.817 0.854 -0.068 0.931 0.393 0.270 1.097 1.012 0.123 0.508 1987 0.118 -0.425 -0.859 -0.164 0.401 -0.834 -0.674 -0.484 1.112 -0.531 -0.100 -0.252 1988 0.465 -0.611 -0.234 0.435 -2.035 0.828 -0.012 0.470 2.150 0.730 0.365 1.337 1989 2.398 1.858 0.865 -0.700 0.972 2.308 2.983 0.289 1.444 0.881 0.587 -0.489 1990 0.399 2.453 2.251 1.820 1.367 -0.255 0.184 -0.625 -0.646 1.271 1.497 1.700 1991 0.155 -0.286 -0.272 1.172 0.245 0.628 -0.244 1.262 -0.988 0.864 0.508 1.757 1992 0.892 0.656 0.371 -1.048 2.901 0.155 -0.090 0.781 -0.800 0.555 0.535 1.452 1993 2.321 0.459 1.373 -0.823 -2.099 -1.676 -0.327 -0.408 -0.566 0.212 0.887 0.450 1994 -0.294 -0.577 1.523 -0.762 -0.039 1.355 1.028 2.020 1.737 1.001 1.817 0.872 1995 0.015 0.497 0.593 -2.225 -1.325 0.912 -0.848 0.720 -0.769 0.589 -0.880 -0.453 1996 -0.399 0.690 -1.067 -2.210 0.136 1.395 2.103 1.334 -1.535 -0.174 -1.052 -0.976 1997 0.579 1.704 0.280 0.740 -1.221 -0.817 -0.104 1.363 0.016 -0.632 -0.054 0.503 1998 -1.141 1.235 0.082 -0.427 0.954 0.229 0.235 0.762 -0.691 0.088 -2.191 0.418 1999 0.319 0.576 -1.365 0.098 -0.342 1.223 0.437 -0.845 0.016 -0.439 0.461 0.899 2000 0.839 0.616 -0.245 -0.159 0.882 1.270 0.652 0.559 1.482 -0.563 -1.601 -2.135 2001 -0.162 -0.381 -0.890 1.242 0.847 0.244 0.849 0.549 -0.570 0.090 1.034 -1.125 2002 0.636 1.819 -0.180 1.384 -0.579 0.351 1.833 -0.017 1.057 -3.027 -1.865 -1.392 2003 -0.046 -0.108 0.461 -0.043 0.705 -0.212 1.344 0.515 1.180 -1.471 -0.129 0.930 2004 -1.199 -0.782 0.102 -1.261 -0.928 -0.063 0.130 -0.340 0.900 -0.201 1.262 1.104 2005 -0.213 -0.940 -0.865 -0.123 -1.495 -0.910 0.863 0.468 1.561 0.260 -0.664 -1.858 2006 -0.437 -0.495 -1.485 -0.349 -0.343 3.119 0.974 0.852 0.584 -1.180 -0.571 1.210 2007 1.071 -0.770 0.539 -0.053 0.875 -0.809 -0.740 0.285 0.879 0.071 -0.299 -0.020 2008 0.607 0.904 0.461 -0.232 -1.574 0.372 0.152 -0.483 -0.513 1.497 0.130 0.229 2009 0.141 -0.469 -0.091 1.097 0.334 -0.451 -1.870 -0.101 1.185 -1.962 0.035 -2.909 2010 -1.000 -2.781 -0.418 -0.995 -2.366 0.308 2.559 0.620 -0.865 -1.283 -0.007 -1.720 2011 -1.088 1.053 0.948 1.120 -1.000 -1.016 0.123 -1.392 0.166 0.677 0.709 1.477 2012 -0.526 -0.603 0.303 -0.424 -0.003 -0.047 1.562 0.821 0.473 -1.907 -0.844 -1.474 2013 -0.781 -0.399 -1.766 0.054 0.876 2.045 1.090 0.923 -0.621 0.422 2.185 0.334 2014 -0.664 -0.974 0.373 1.285 0.762 0.726 0.809 0.216 1.232 -1.544 -0.707 0.238 2015 0.564 0.909 1.342 0.016 0.128 1.408 -1.500 0.021 0.736 -0.456 1.084 1.245 2016 -1.512 -0.083 -0.472 -1.780 -0.892 1.899 1.583 2.481 0.007