1967.0000000;-1.3052305
1968.0000000;0.2056811
1969.0000000;-0.8114811
1970.0000000;-0.5816576
1971.0000000;-1.5895779
1972.0000000;-0.6904674
1973.0000000;-0.9953997
1974.0000000;-1.0781705
1975.0000000;-0.6188533
1976.0000000;-1.5775981
1977.0000000;-0.2555616
1978.0000000;0.3062530
1979.0000000;-0.4095377
1980.0000000;0.2800952
1981.0000000;0.0351509
1982.0000000;-0.0799550
1983.0000000;-0.1960588
1984.0000000;1.1050392
1985.0000000;0.6531320
1986.0000000;-1.2621816
1987.0000000;-0.0358419
1988.0000000;0.2736246
1989.0000000;-1.4047935
1990.0000000;-1.6356924
1991.0000000;-1.6703389
1992.0000000;-1.6234629
1993.0000000;-0.7406516
1994.0000000;-0.4505465
1995.0000000;0.7505414
1996.0000000;-0.3650814
1997.0000000;-0.8931816
1998.0000000;-1.7473874
1999.0000000;-0.7439401
2000.0000000;-0.8852595
2001.0000000;0.6489589
2002.0000000;-1.0411031
2003.0000000;-2.3935280
2004.0000000;-1.9379122
2005.0000000;-2.0809293
2006.0000000;-1.4977921
2007.0000000;-1.3166555
2008.0000000;-1.5582840
2009.0000000;-2.1738729
2010.0000000;-1.1423726
2011.0000000;-2.2221568
2012.0000000;-2.3634822
2013.0000000;-0.7608132
2014.0000000;-1.0812379
2015.0000000;-2.0879235