1967.0000000;-1.2588385
1968.0000000;0.4207457
1969.0000000;-0.7119061
1970.0000000;-0.5591918
1971.0000000;-1.4044127
1972.0000000;-0.4717414
1973.0000000;-0.7274738
1974.0000000;-0.8507506
1975.0000000;-0.4163335
1976.0000000;-1.2548703
1977.0000000;-0.1207674
1978.0000000;0.3121710
1979.0000000;-0.1718939
1980.0000000;0.0347964
1981.0000000;0.0341357
1982.0000000;0.0408721
1983.0000000;-0.2695268
1984.0000000;1.0269045
1985.0000000;0.5458991
1986.0000000;-1.2205005
1987.0000000;-0.2802541
1988.0000000;0.3482412
1989.0000000;-1.3567953
1990.0000000;-1.6088719
1991.0000000;-1.6667094
1992.0000000;-1.2849543
1993.0000000;-0.5986289
1994.0000000;-0.3753436
1995.0000000;0.6659306
1996.0000000;-0.0741531
1997.0000000;-0.7229600
1998.0000000;-1.6205223
1999.0000000;-0.7176144
2000.0000000;-0.8209119
2001.0000000;0.7784587
2002.0000000;-0.1073525
2003.0000000;-2.0891311
2004.0000000;-1.7305522
2005.0000000;-1.8282158
2006.0000000;-1.2793962
2007.0000000;-0.6535503
2008.0000000;-1.4235935
2009.0000000;-2.0031748
2010.0000000;-0.8267241
2011.0000000;-1.8886536
2012.0000000;-2.0321162
2013.0000000;-0.7537768
2014.0000000;-0.8953098
2015.0000000;-1.8089294