1967.0000000;-0.6094201
1968.0000000;0.3539826
1969.0000000;-0.4928501
1970.0000000;-0.4783026
1971.0000000;-1.0720813
1972.0000000;-0.4463641
1973.0000000;-0.9555132
1974.0000000;-0.8943938
1975.0000000;-0.6414602
1976.0000000;-1.2474613
1977.0000000;0.2410326
1978.0000000;0.2764567
1979.0000000;-0.0534157
1980.0000000;0.3006083
1981.0000000;0.2213883
1982.0000000;-0.0617420
1983.0000000;-0.1017795
1984.0000000;1.2787726
1985.0000000;0.9491488
1986.0000000;-1.0311966
1987.0000000;0.3735739
1988.0000000;0.6006083
1989.0000000;-1.3047688
1990.0000000;-1.6426100
1991.0000000;-1.1900581
1992.0000000;-1.7964811
1993.0000000;-0.6559917
1994.0000000;-0.4730411
1995.0000000;0.6824859
1996.0000000;-0.0639218
1997.0000000;-0.8997451
1998.0000000;-1.6368558
1999.0000000;-0.7935023
2000.0000000;-0.9633771
2001.0000000;0.9313840
2002.0000000;-0.6484739
2003.0000000;-2.2801704
2004.0000000;-1.8583279
2005.0000000;-1.8916248
2006.0000000;-1.0217619
2007.0000000;-0.9139451
2008.0000000;-1.3846526
2009.0000000;-1.7209573
2010.0000000;-0.9351100
2011.0000000;-1.9910806
2012.0000000;-2.0664425
2013.0000000;-0.6248127
2014.0000000;-1.2492564
2015.0000000;-1.9389533