1967.0000000;-0.8633708
1968.0000000;0.2751738
1969.0000000;-0.4329712
1970.0000000;-0.3547093
1971.0000000;-1.0227635
1972.0000000;-0.3241934
1973.0000000;-0.7736235
1974.0000000;-0.6107973
1975.0000000;-0.3698452
1976.0000000;-1.0792239
1977.0000000;-0.2631607
1978.0000000;0.2013255
1979.0000000;-0.2185552
1980.0000000;0.0862977
1981.0000000;-0.0638424
1982.0000000;-0.1545568
1983.0000000;-0.2409564
1984.0000000;1.1678865
1985.0000000;0.7042719
1986.0000000;-1.0905350
1987.0000000;-0.0802450
1988.0000000;0.5781178
1989.0000000;-1.2051716
1990.0000000;-1.3279910
1991.0000000;-1.4286031
1992.0000000;-1.3484604
1993.0000000;-0.6342657
1994.0000000;-0.3589582
1995.0000000;0.6365144
1996.0000000;0.0584492
1997.0000000;-0.7320301
1998.0000000;-1.4376535
1999.0000000;-0.7010905
2000.0000000;-0.8770462
2001.0000000;0.8760428
2002.0000000;-0.2411755
2003.0000000;-2.2090487
2004.0000000;-1.6621456
2005.0000000;-1.7420969
2006.0000000;-1.0841911
2007.0000000;-0.6573190
2008.0000000;-1.0786226
2009.0000000;-1.8723809
2010.0000000;-0.4864234
2011.0000000;-1.6886108
2012.0000000;-1.8947511
2013.0000000;-0.5065885
2014.0000000;-0.8350416
2015.0000000;-1.4542516