1967.0000000;-0.4070969
1968.0000000;0.3641294
1969.0000000;-1.5472825
1970.0000000;-0.7868111
1971.0000000;-1.5889773
1972.0000000;-0.9159155
1973.0000000;-1.2515259
1974.0000000;-1.2693757
1975.0000000;-0.4761895
1976.0000000;-1.6625216
1977.0000000;0.4957279
1978.0000000;0.4051956
1979.0000000;-0.2285327
1980.0000000;0.6810356
1981.0000000;0.2057093
1982.0000000;-0.1399021
1983.0000000;-0.0392844
1984.0000000;1.3372977
1985.0000000;1.0834723
1986.0000000;-1.7109120
1987.0000000;0.5852560
1988.0000000;0.2860056
1989.0000000;-1.2218839
1990.0000000;-2.0540984
1991.0000000;-1.5108051
1992.0000000;-1.4268519
1993.0000000;-0.5782762
1994.0000000;-0.1458220
1995.0000000;1.0713816
1996.0000000;-0.0998281
1997.0000000;-0.7536166
1998.0000000;-1.8666593
1999.0000000;-0.4248576
2000.0000000;-1.0196290
2001.0000000;0.8019650
2002.0000000;-0.8405536
2003.0000000;-2.6353889
2004.0000000;-1.9351313
2005.0000000;-2.0917122
2006.0000000;-1.3193409
2007.0000000;-0.7824269
2008.0000000;-1.5212456
2009.0000000;-2.8934660
2010.0000000;-1.1541250
2011.0000000;-2.6359916
2012.0000000;-2.6061263
2013.0000000;-1.0237081
2014.0000000;-1.0800513
2015.0000000;-2.4934046