1967.0000000;-0.8192748
1968.0000000;-0.0794057
1969.0000000;-0.4872019
1970.0000000;-0.7850710
1971.0000000;-0.2355618
1972.0000000;-0.4148799
1973.0000000;-1.5786799
1974.0000000;-0.7332594
1975.0000000;-0.6393077
1976.0000000;-0.9731351
1977.0000000;0.5356791
1978.0000000;0.4422058
1979.0000000;0.3234869
1980.0000000;0.2336093
1981.0000000;-0.4241956
1982.0000000;-0.1775687
1983.0000000;-0.1737529
1984.0000000;0.1250616
1985.0000000;-0.4291211
1986.0000000;-1.4072964
1987.0000000;-0.9257710
1988.0000000;-0.5431809
1989.0000000;-1.5706195
1990.0000000;-1.3373084
1991.0000000;-0.7244355
1992.0000000;-0.6580840
1993.0000000;-0.6319218
1994.0000000;-0.5480315
1995.0000000;0.0534315
1996.0000000;-0.0006087
1997.0000000;-0.7744920
1998.0000000;-1.7564200
1999.0000000;-1.3888003
2000.0000000;-1.2658211
2001.0000000;0.4002339
2002.0000000;-1.4833127
2003.0000000;-3.1588173
2004.0000000;-1.4399073
2005.0000000;-2.1608129
2006.0000000;-2.2128325
2007.0000000;-2.1801219
2008.0000000;-1.5995448
2009.0000000;-2.2853689
2010.0000000;-0.6242694
2011.0000000;-2.8360868
2012.0000000;-2.1693377
2013.0000000;-0.8528209
2014.0000000;-1.5515854
2015.0000000;-3.1026015