1967.0000000;-1.0633743
1968.0000000;-0.0762688
1969.0000000;-0.2725133
1970.0000000;-1.0092392
1971.0000000;-0.3640020
1972.0000000;-0.2095878
1973.0000000;-1.4316657
1974.0000000;-0.8197719
1975.0000000;-0.7764815
1976.0000000;-0.7979513
1977.0000000;0.5679724
1978.0000000;0.4294272
1979.0000000;0.1465523
1980.0000000;-0.0333345
1981.0000000;-0.4354542
1982.0000000;-0.2489315
1983.0000000;-0.1707899
1984.0000000;-0.0073356
1985.0000000;-0.5118821
1986.0000000;-1.2411526
1987.0000000;-0.8084789
1988.0000000;-0.3684897
1989.0000000;-1.6078184
1990.0000000;-0.9291708
1991.0000000;-0.6524204
1992.0000000;-0.9742435
1993.0000000;-0.6402942
1994.0000000;-0.4936676
1995.0000000;-0.1384315
1996.0000000;0.1690837
1997.0000000;-0.5088994
1998.0000000;-1.4074955
1999.0000000;-0.9322450
2000.0000000;-1.2747676
2001.0000000;0.9572105
2002.0000000;-0.5929410
2003.0000000;-2.2944989
2004.0000000;-1.3622955
2005.0000000;-1.9515332
2006.0000000;-1.4003849
2007.0000000;-1.0028213
2008.0000000;-0.6009050
2009.0000000;-1.5984620
2010.0000000;-0.3600873
2011.0000000;-1.7238090
2012.0000000;-1.5765189
2013.0000000;-0.5713149
2014.0000000;-0.8596345
2015.0000000;-1.9921482