1967.0000000;-0.2389485
1968.0000000;-0.5458071
1969.0000000;-0.5497947
1970.0000000;-0.4827830
1971.0000000;-1.4211671
1972.0000000;-0.4498892
1973.0000000;-0.9475647
1974.0000000;-0.6880505
1975.0000000;-0.3731285
1976.0000000;-1.0887855
1977.0000000;0.1611526
1978.0000000;0.7516307
1979.0000000;0.0158844
1980.0000000;0.5834011
1981.0000000;0.3189093
1982.0000000;0.0477194
1983.0000000;-0.0780180
1984.0000000;0.6341355
1985.0000000;-0.1251318
1986.0000000;-1.6109946
1987.0000000;0.0548624
1988.0000000;0.1894761
1989.0000000;-1.6685227
1990.0000000;-1.2129364
1991.0000000;-0.6146646
1992.0000000;-0.8227531
1993.0000000;-0.5207640
1994.0000000;-0.4425696
1995.0000000;0.9542813
1996.0000000;-0.0780113
1997.0000000;-0.5918749
1998.0000000;-1.1639998
1999.0000000;-0.7674814
2000.0000000;-0.8307078
2001.0000000;0.3680425
2002.0000000;-0.8566968
2003.0000000;-3.2475445
2004.0000000;-1.9410301
2005.0000000;-2.1720326
2006.0000000;-1.7333084
2007.0000000;-0.6558566
2008.0000000;-1.6480571
2009.0000000;-2.9090998
2010.0000000;-0.3372936
2011.0000000;-2.4679227
2012.0000000;-2.2354918
2013.0000000;-0.6075054
2014.0000000;-0.5229262
2015.0000000;-2.1046515