1967.0000000;-1.3441744
1968.0000000;0.5015457
1969.0000000;-0.9862804
1970.0000000;-0.5227566
1971.0000000;-1.4959613
1972.0000000;-0.5326383
1973.0000000;-0.8079055
1974.0000000;-1.0714401
1975.0000000;-1.1102797
1976.0000000;-1.4755632
1977.0000000;0.0936203
1978.0000000;0.0628954
1979.0000000;-0.4148591
1980.0000000;-0.2186123
1981.0000000;-0.2125770
1982.0000000;-0.1342569
1983.0000000;-0.2648731
1984.0000000;0.9600956
1985.0000000;0.9028966
1986.0000000;-1.1927495
1987.0000000;-0.1951832
1988.0000000;-0.1594864
1989.0000000;-1.3379279
1990.0000000;-1.6392486
1991.0000000;-1.6599329
1992.0000000;-1.7425098
1993.0000000;-0.9212239
1994.0000000;-0.9463177
1995.0000000;0.4881807
1996.0000000;-0.7163004
1997.0000000;-1.0118167
1998.0000000;-1.9661423
1999.0000000;-0.8014197
2000.0000000;-1.3645523
2001.0000000;0.9756189
2002.0000000;-0.6335996
2003.0000000;-2.3199530
2004.0000000;-2.0497673
2005.0000000;-2.0541191
2006.0000000;-1.3762677
2007.0000000;-1.3165610
2008.0000000;-1.6338415
2009.0000000;-2.0811973
2010.0000000;-1.4183850
2011.0000000;-2.1231208
2012.0000000;-2.2921586
2013.0000000;-1.2121420
2014.0000000;-1.5746138
2015.0000000;-2.1844239