1967.0000000;-1.6080452
1968.0000000;0.7789885
1969.0000000;-0.5630487
1970.0000000;-1.1048579
1971.0000000;-0.5133271
1972.0000000;-0.1298218
1973.0000000;-0.5733991
1974.0000000;-1.4804811
1975.0000000;-0.7137874
1976.0000000;-1.4198598
1977.0000000;1.0128223
1978.0000000;0.5560555
1979.0000000;-0.5043811
1980.0000000;-0.1321251
1981.0000000;-0.9678881
1982.0000000;-0.7730870
1983.0000000;-0.1009421
1984.0000000;0.2993278
1985.0000000;-1.1600547
1986.0000000;-1.3755877
1987.0000000;-0.9507656
1988.0000000;-0.2925476
1989.0000000;-1.6131831
1990.0000000;-1.5312011
1991.0000000;-1.1592560
1992.0000000;-0.8403524
1993.0000000;-0.8398403
1994.0000000;-0.3593229
1995.0000000;-0.6648626
1996.0000000;-1.0660050
1997.0000000;-0.4139988
1998.0000000;-2.0342741
1999.0000000;-1.5113064
2000.0000000;-1.3815875
2001.0000000;0.8372235
2002.0000000;-1.5072190
2003.0000000;-2.5937903
2004.0000000;-2.2073836
2005.0000000;-2.6033933
2006.0000000;-1.8225241
2007.0000000;-2.2004745
2008.0000000;-1.2190411
2009.0000000;-2.1555510
2010.0000000;-0.8590498
2011.0000000;-2.3133202
2012.0000000;-2.0063272
2013.0000000;-0.8960398
2014.0000000;-0.8483179
2015.0000000;-1.7819703