YEAR DECJAN JANFEB FEBMAR MARAPR APRMAY MAYJUN JUNJUL JULAUG AUGSEP SEPOCT OCTNOV NOVDEC 1980 .672 .585 .689 .927 .966 .931 .768 .349 .281 .201 .251 .089 1981 -.262 -.151 .456 .671 .189 .004 -.027 -.072 .187 .112 -.038 -.141 1982 -.27 -.137 .103 .013 .445 .947 1.613 1.806 1.811 2.024 2.428 2.411 1983 2.683 2.91 3.012 2.808 2.538 2.255 1.792 1.184 .497 .038 -.132 -.188 1984 -.33 -.529 .139 .373 .189 -.023 -.054 -.138 -.106 .001 -.352 -.603 1985 -.561 -.595 -.709 -.472 -.715 -.14 -.126 -.35 -.526 -.139 -.059 -.293 1986 -.301 -.195 .028 -.099 .355 .301 .402 .787 1.088 .979 .873 1.19 1987 1.25 1.205 1.722 1.859 2.134 1.975 1.878 2.003 1.894 1.647 1.271 1.282 1988 1.119 .706 .491 .387 .196 -.556 -1.107 -1.284 -1.506 -1.326 -1.468 -1.328 1989 -1.12 -1.262 -1.054 -.763 -.402 -.216 -.429 -.479 -.311 -.341 -.073 .115 1990 .237 .563 .956 .469 .658 .527 .151 .145 .378 .285 .389 .348 1991 .313 .314 .402 .454 .748 1.074 1.044 1.031 .76 1.009 1.189 1.32 1992 1.743 1.87 1.991 2.258 2.112 1.75 1.048 .58 .497 .641 .582 .648 1993 .687 .974 .99 1.417 2.019 1.635 1.206 1.05 .992 1.069 .834 .589 1994 .353 .182 .157 .473 .585 .819 .907 .783 .908 1.407 1.299 1.237 1995 1.22 .946 .853 .469 .576 .53 .234 -.13 -.426 -.477 -.478 -.554 1996 -.612 -.58 -.238 -.386 -.044 .111 -.173 -.358 -.437 -.349 -.146 -.336 1997 -.49 -.621 -.252 .543 1.14 2.287 2.827 3.037 3.044 2.401 2.542 2.335 1998 2.466 2.761 2.755 2.661 2.237 1.356 .392 -.319 -.6 -.798 -1.086 -.922 1999 -1.053 -1.14 -.971 -.903 -.601 -.31 -.477 -.725 -.953 -.973 -1.05 -1.161 2000 -1.139 -1.21 -1.113 -.409 .257 .02 -.157 -.129 -.227 -.387 -.714 -.566 2001 -.505 -.661 -.56 -.055 .288 .071 .299 .35 -.165 -.275 -.153 .019 2002 .009 -.171 -.121 .414 .891 .945 .716 1.025 .908 1 1.09 1.145 2003 1.218 .935 .833 .421 .214 .131 .178 .329 .477 .516 .57 .351 2004 .327 .359 -.035 .374 .56 .327 .574 .639 .572 .508 .805 .667 2005 .32 .81 1.067 .637 .893 .612 .519 .362 .315 -.167 -.392 -.57 2006 -.438 -.424 -.527 -.575 .043 .546 .718 .77 .823 .955 1.286 .951 2007 .985 .528 .12 .02 .354 -.136 -.247 -.427 -1.181 -1.217 -1.165 -1.193 2008 -1.02 -1.388 -1.579 -.879 -.349 .164 .089 -.252 -.551 -.692 -.597 -.663 2009 -.726 -.707 -.723 -.105 .328 .779 1.06 1.073 .735 .909 1.121 1.045 2010 1.067 1.52 1.469 .99 .668 -.211 -1.099 -1.662 -1.868 -1.899 -1.49 -1.577 2011 -1.739 -1.563 -1.575 -1.399 -.202 .016 -.191 -.502 -.769 -.933 -.949 -.957 2012 -.993 -.695 -.398 .112 .769 .866 1.128 .628 .339 .081 .125 .094 2013 .096 -.08 -.037 .095 .203 -.078 -.311 -.466 -.133 .13 -.053 -.248 2014 -.275 -.266 .027 .312 1.01 1.057 .921 .961 .585 .438 .763 .558 2015 .42 .459 .631 .943 1.592 2.101 1.987 2.365 2.53 2.241 2.297 2.112 2016 2.227 2.169 1.984 2.124 1.77 1.069 .354 .186 -.101 -.379 -.212 -.121 2017 -.055 -.056 -.08 .77 1.455 1.049 .461 .027