1967.0000000;-0.5341123
1968.0000000;0.6455035
1969.0000000;-1.0137180
1970.0000000;-0.5468726
1971.0000000;-0.8367590
1972.0000000;-0.7363002
1973.0000000;-0.8728533
1974.0000000;-1.1603184
1975.0000000;-0.6816430
1976.0000000;-1.6019242
1977.0000000;0.5439678
1978.0000000;0.3504419
1979.0000000;-0.0667762
1980.0000000;0.8140897
1981.0000000;0.2504647
1982.0000000;-0.1373100
1983.0000000;-0.0460215
1984.0000000;1.7981741
1985.0000000;1.1033918
1986.0000000;-1.4459748
1987.0000000;0.5078530
1988.0000000;0.1648978
1989.0000000;-1.0694108
1990.0000000;-1.8522874
1991.0000000;-1.3235197
1992.0000000;-1.4042108
1993.0000000;-0.5894531
1994.0000000;-0.2185798
1995.0000000;1.1443455
1996.0000000;0.1515552
1997.0000000;-0.5275906
1998.0000000;-1.7698390
1999.0000000;-0.3819226
2000.0000000;-0.6979673
2001.0000000;0.9087317
2002.0000000;-0.5359375
2003.0000000;-2.3227630
2004.0000000;-2.0129843
2005.0000000;-2.0983067
2006.0000000;-1.2705700
2007.0000000;-0.8924803
2008.0000000;-1.6886642
2009.0000000;-3.0869493
2010.0000000;-1.4037161
2011.0000000;-3.0865054
2012.0000000;-3.0238967
2013.0000000;-1.9880574
2014.0000000;-1.6700857
2015.0000000;-3.2687821