1967.0000000;-0.7892652
1968.0000000;0.6500913
1969.0000000;-0.2714979
1970.0000000;-0.3042678
1971.0000000;-1.1952381
1972.0000000;-0.2805781
1973.0000000;-0.7311379
1974.0000000;-0.6844972
1975.0000000;-0.7158752
1976.0000000;-1.1728702
1977.0000000;-0.0389125
1978.0000000;0.1607404
1979.0000000;-0.1812007
1980.0000000;0.0795389
1981.0000000;0.1807729
1982.0000000;-0.2464197
1983.0000000;-0.1948928
1984.0000000;1.2717606
1985.0000000;0.5811801
1986.0000000;-1.1168334
1987.0000000;-0.2136556
1988.0000000;0.4169608
1989.0000000;-1.1941593
1990.0000000;-1.2230701
1991.0000000;-1.3308020
1992.0000000;-1.4800566
1993.0000000;-0.8321818
1994.0000000;-0.5860610
1995.0000000;0.8035300
1996.0000000;-0.0026160
1997.0000000;-0.7701675
1998.0000000;-1.5379982
1999.0000000;-0.7550557
2000.0000000;-1.1211164
2001.0000000;0.9420493
2002.0000000;-0.2375500
2003.0000000;-2.2793665
2004.0000000;-1.8748407
2005.0000000;-1.8203325
2006.0000000;-1.1428289
2007.0000000;-0.6678619
2008.0000000;-1.3596632
2009.0000000;-1.9499774
2010.0000000;-0.8113168
2011.0000000;-2.0805526
2012.0000000;-2.1766722
2013.0000000;-0.9014112
2014.0000000;-1.0692670
2015.0000000;-2.0877330