1967.0000000;-0.6534877
1968.0000000;0.2590489
1969.0000000;-0.2133129
1970.0000000;-0.5000377
1971.0000000;-0.5383412
1972.0000000;-0.1159215
1973.0000000;-1.2873847
1974.0000000;-0.8572382
1975.0000000;0.0537153
1976.0000000;-1.1409395
1977.0000000;0.4712781
1978.0000000;0.5657148
1979.0000000;-0.1534191
1980.0000000;0.3838081
1981.0000000;-0.0190762
1982.0000000;-0.2127096
1983.0000000;-0.3040941
1984.0000000;0.4563788
1985.0000000;-0.1373453
1986.0000000;-1.2149096
1987.0000000;-0.0585054
1988.0000000;0.2581962
1989.0000000;-1.4716656
1990.0000000;-1.3861711
1991.0000000;-0.7717586
1992.0000000;-0.7532797
1993.0000000;-0.5993447
1994.0000000;-0.1829795
1995.0000000;0.4853535
1996.0000000;-0.1896828
1997.0000000;-0.5502383
1998.0000000;-1.4227374
1999.0000000;-0.4731118
2000.0000000;-0.7407655
2001.0000000;0.8182147
2002.0000000;-0.6367350
2003.0000000;-2.5509121
2004.0000000;-1.9150498
2005.0000000;-1.9929632
2006.0000000;-1.7493621
2007.0000000;-1.3619987
2008.0000000;-0.7680752
2009.0000000;-2.1173363
2010.0000000;-0.7082374
2011.0000000;-2.1667111
2012.0000000;-1.7903323
2013.0000000;-0.4536675
2014.0000000;-0.9832011
2015.0000000;-2.1962073