1967.0000000;-1.4837314
1968.0000000;0.1592371
1969.0000000;-0.3222080
1970.0000000;-0.6614166
1971.0000000;-1.2043357
1972.0000000;0.2840675
1973.0000000;-0.3061526
1974.0000000;-0.9729207
1975.0000000;-0.3230523
1976.0000000;-0.3620468
1977.0000000;0.4125676
1978.0000000;0.1059834
1979.0000000;-0.9656682
1980.0000000;-0.5076391
1981.0000000;-0.1676712
1982.0000000;-1.3034717
1983.0000000;-0.2945451
1984.0000000;0.6516362
1985.0000000;0.0081362
1986.0000000;-1.3400987
1987.0000000;-1.1275194
1988.0000000;-1.1910615
1989.0000000;-1.6012688
1990.0000000;-1.1175441
1991.0000000;-1.6979724
1992.0000000;-1.2467606
1993.0000000;-0.7698542
1994.0000000;-0.6413969
1995.0000000;0.1528077
1996.0000000;-0.7724585
1997.0000000;-0.9300647
1998.0000000;-1.7570102
1999.0000000;-0.6025296
2000.0000000;-0.7760575
2001.0000000;0.5850737
2002.0000000;0.3546903
2003.0000000;-2.0549312
2004.0000000;-1.8729527
2005.0000000;-1.7330589
2006.0000000;-1.3616531
2007.0000000;-1.0773438
2008.0000000;-0.5901016
2009.0000000;-1.5622132
2010.0000000;-0.4092662
2011.0000000;-1.6607659
2012.0000000;-1.7588334
2013.0000000;-1.0289298
2014.0000000;-0.9421297
2015.0000000;-0.7513762