1967.0000000;-1.4658746
1968.0000000;-0.2585967
1969.0000000;-0.4911982
1970.0000000;-1.2402915
1971.0000000;-0.8505218
1972.0000000;-0.3182153
1973.0000000;-1.6840694
1974.0000000;-1.0064225
1975.0000000;-0.8940433
1976.0000000;-1.2057726
1977.0000000;0.6960022
1978.0000000;0.4794398
1979.0000000;0.1284374
1980.0000000;-0.0012454
1981.0000000;-0.5356331
1982.0000000;-0.3452505
1983.0000000;-0.2478767
1984.0000000;-0.0197114
1985.0000000;-0.5322613
1986.0000000;-1.3062489
1987.0000000;-1.0230269
1988.0000000;-0.5141646
1989.0000000;-1.6759715
1990.0000000;-1.2721987
1991.0000000;-0.6371705
1992.0000000;-0.8049015
1993.0000000;-0.7601529
1994.0000000;-0.6520718
1995.0000000;-0.3204157
1996.0000000;0.0820965
1997.0000000;-0.4342166
1998.0000000;-1.6518928
1999.0000000;-1.4263741
2000.0000000;-1.3729197
2001.0000000;0.7624605
2002.0000000;-1.1655099
2003.0000000;-2.8628592
2004.0000000;-1.5282245
2005.0000000;-2.2024989
2006.0000000;-1.7575912
2007.0000000;-1.6454246
2008.0000000;-1.0626045
2009.0000000;-1.7270387
2010.0000000;-0.1991738
2011.0000000;-1.7186029
2012.0000000;-1.5665692
2013.0000000;-0.4452722
2014.0000000;-0.6398453
2015.0000000;-1.7301152