1967.0000000;-0.2045830
1968.0000000;-0.7404147
1969.0000000;-1.0664834
1970.0000000;-0.7642434
1971.0000000;-1.7404726
1972.0000000;-0.7321293
1973.0000000;-1.2587357
1974.0000000;-0.7595462
1975.0000000;-0.4007728
1976.0000000;-1.4498236
1977.0000000;0.2185936
1978.0000000;0.4831909
1979.0000000;0.0875835
1980.0000000;0.8104661
1981.0000000;0.3228593
1982.0000000;-0.0062294
1983.0000000;-0.0761914
1984.0000000;0.7225232
1985.0000000;-0.0124476
1986.0000000;-1.4831991
1987.0000000;0.2130002
1988.0000000;0.3166476
1989.0000000;-1.3146651
1990.0000000;-1.4999396
1991.0000000;-1.2971017
1992.0000000;-0.7463521
1993.0000000;-0.5145451
1994.0000000;-0.6314361
1995.0000000;1.0330324
1996.0000000;-0.3465642
1997.0000000;-0.8497363
1998.0000000;-1.6333252
1999.0000000;-0.6204517
2000.0000000;-1.3989620
2001.0000000;0.4859346
2002.0000000;-1.3219316
2003.0000000;-3.1831789
2004.0000000;-1.3194158
2005.0000000;-2.4063053
2006.0000000;-1.0732026
2007.0000000;-0.9354309
2008.0000000;-1.5993448
2009.0000000;-3.0766673
2010.0000000;-0.6312684
2011.0000000;-3.0410457
2012.0000000;-2.5238247
2013.0000000;-1.1443132
2014.0000000;-1.0816662
2015.0000000;-2.6299865