1967.0000000;-0.8846327
1968.0000000;-0.1457834
1969.0000000;-0.1917057
1970.0000000;-0.9859122
1971.0000000;-1.2196653
1972.0000000;-0.3646666
1973.0000000;-1.3883967
1974.0000000;-0.9379888
1975.0000000;0.0078693
1976.0000000;-0.7750053
1977.0000000;0.4383616
1978.0000000;0.5057385
1979.0000000;-0.5031084
1980.0000000;0.3755742
1981.0000000;0.1132183
1982.0000000;-0.2340899
1983.0000000;-0.3978267
1984.0000000;0.5913370
1985.0000000;0.1589968
1986.0000000;-1.2983358
1987.0000000;-0.6479756
1988.0000000;-0.5072753
1989.0000000;-1.5562563
1990.0000000;-1.5826890
1991.0000000;-1.5138779
1992.0000000;-1.8022299
1993.0000000;-0.7321830
1994.0000000;-0.5458992
1995.0000000;0.4212742
1996.0000000;-0.2283013
1997.0000000;-0.8251605
1998.0000000;-1.6979042
1999.0000000;-0.7800214
2000.0000000;-1.1908751
2001.0000000;0.6985016
2002.0000000;-0.3165938
2003.0000000;-2.2551537
2004.0000000;-1.7778563
2005.0000000;-1.8902895
2006.0000000;-1.4532021
2007.0000000;-1.1493310
2008.0000000;-0.9649871
2009.0000000;-1.7633777
2010.0000000;-0.9693072
2011.0000000;-2.0034409
2012.0000000;-2.0535219
2013.0000000;-1.1031944
2014.0000000;-1.1979723
2015.0000000;-1.9190177