1967.0000000;-0.7503085
1968.0000000;0.5008051
1969.0000000;-0.6694489
1970.0000000;-0.6414659
1971.0000000;-1.4627022
1972.0000000;-0.5178217
1973.0000000;-0.8689833
1974.0000000;-1.0459888
1975.0000000;-0.7424065
1976.0000000;-1.3739986
1977.0000000;0.2632814
1978.0000000;0.2646608
1979.0000000;-0.2906401
1980.0000000;0.3036909
1981.0000000;0.2336588
1982.0000000;-0.0800538
1983.0000000;-0.1945957
1984.0000000;1.1932799
1985.0000000;0.6728564
1986.0000000;-1.1492085
1987.0000000;0.0448079
1988.0000000;0.3754505
1989.0000000;-1.3587184
1990.0000000;-1.7545741
1991.0000000;-1.4021963
1992.0000000;-1.7914636
1993.0000000;-0.7497591
1994.0000000;-0.6311194
1995.0000000;0.6458491
1996.0000000;-0.1533291
1997.0000000;-0.9077177
1998.0000000;-1.6779519
1999.0000000;-0.8759459
2000.0000000;-1.1232836
2001.0000000;0.8948643
2002.0000000;-0.8090842
2003.0000000;-2.3422217
2004.0000000;-1.9528041
2005.0000000;-2.0007074
2006.0000000;-1.2313790
2007.0000000;-1.1658618
2008.0000000;-1.4820210
2009.0000000;-1.9322357
2010.0000000;-1.1261533
2011.0000000;-2.1549330
2012.0000000;-2.2385647
2013.0000000;-0.7757735
2014.0000000;-1.3284914
2015.0000000;-2.1574621