1967.0000000;-0.8452889
1968.0000000;0.6269004
1969.0000000;-0.0867825
1970.0000000;-0.5151125
1971.0000000;-0.7497810
1972.0000000;0.0532701
1973.0000000;-0.7945979
1974.0000000;-0.5673857
1975.0000000;0.1890472
1976.0000000;-0.5659682
1977.0000000;0.3538463
1978.0000000;0.4190581
1979.0000000;-0.3698366
1980.0000000;0.0234557
1981.0000000;-0.3338064
1982.0000000;-0.2922181
1983.0000000;-0.1640081
1984.0000000;0.7006272
1985.0000000;-0.2190270
1986.0000000;-1.1498516
1987.0000000;-0.4980414
1988.0000000;-0.0979685
1989.0000000;-1.4074838
1990.0000000;-0.5756124
1991.0000000;-0.9312641
1992.0000000;-0.6088277
1993.0000000;-0.6134297
1994.0000000;-0.3496978
1995.0000000;0.4556543
1996.0000000;-0.0190901
1997.0000000;-0.1752446
1998.0000000;-1.2797780
1999.0000000;-0.5185806
2000.0000000;-0.8015268
2001.0000000;0.4054829
2002.0000000;-0.0294302
2003.0000000;-2.2689915
2004.0000000;-1.9802102
2005.0000000;-2.0163589
2006.0000000;-1.6679969
2007.0000000;-0.9401443
2008.0000000;-0.7669122
2009.0000000;-2.0075321
2010.0000000;-0.5223196
2011.0000000;-2.1355929
2012.0000000;-1.8555617
2013.0000000;-0.5777236
2014.0000000;-0.8955975
2015.0000000;-2.0621684