1967.0000000;-0.5181020
1968.0000000;0.3708634
1969.0000000;-0.9533115
1970.0000000;-0.7764817
1971.0000000;-1.3623347
1972.0000000;-0.6940602
1973.0000000;-0.8948092
1974.0000000;-1.1263385
1975.0000000;-0.4290741
1976.0000000;-1.9160297
1977.0000000;0.4369360
1978.0000000;0.4416080
1979.0000000;0.0885417
1980.0000000;0.8103449
1981.0000000;0.3522988
1982.0000000;0.1446986
1983.0000000;-0.0102712
1984.0000000;0.8008046
1985.0000000;0.2650681
1986.0000000;-1.6369188
1987.0000000;-0.1796724
1988.0000000;-0.0553152
1989.0000000;-1.5211028
1990.0000000;-1.8491447
1991.0000000;-1.8158314
1992.0000000;-1.5609739
1993.0000000;-0.7689357
1994.0000000;-0.7597963
1995.0000000;0.7850433
1996.0000000;-0.6179434
1997.0000000;-0.5668062
1998.0000000;-1.7091570
1999.0000000;-0.5794805
2000.0000000;-1.0473964
2001.0000000;0.1490485
2002.0000000;-1.3451800
2003.0000000;-3.1004584
2004.0000000;-1.9380286
2005.0000000;-2.1621332
2006.0000000;-1.5426797
2007.0000000;-1.0567493
2008.0000000;-1.8279319
2009.0000000;-3.1543691
2010.0000000;-1.0791357
2011.0000000;-2.7016144
2012.0000000;-2.5243654
2013.0000000;-0.6684166
2014.0000000;-1.0488200
2015.0000000;-2.6084700