1967.0000000;-1.5957181
1968.0000000;0.6230688
1969.0000000;-0.5778199
1970.0000000;-0.7982290
1971.0000000;-0.8778226
1972.0000000;0.1127914
1973.0000000;-1.3151476
1974.0000000;-1.1287282
1975.0000000;-0.3863436
1976.0000000;-1.3770425
1977.0000000;0.4832455
1978.0000000;0.3068705
1979.0000000;-0.9692459
1980.0000000;-0.4835145
1981.0000000;-0.7062925
1982.0000000;-1.0165280
1983.0000000;-0.2712233
1984.0000000;0.7769953
1985.0000000;-0.2453873
1986.0000000;-1.3041039
1987.0000000;-0.4989969
1988.0000000;-0.4470962
1989.0000000;-1.5984552
1990.0000000;-0.6608942
1991.0000000;-1.2753741
1992.0000000;-0.9500999
1993.0000000;-0.4460713
1994.0000000;-0.3732761
1995.0000000;0.2032077
1996.0000000;-0.2527508
1997.0000000;-0.2955070
1998.0000000;-1.6220061
1999.0000000;-0.5215741
2000.0000000;-0.9312465
2001.0000000;0.5122895
2002.0000000;-0.4435243
2003.0000000;-2.2556577
2004.0000000;-2.0952787
2005.0000000;-2.1604996
2006.0000000;-1.7434796
2007.0000000;-1.4134710
2008.0000000;-1.2553539
2009.0000000;-1.9348147
2010.0000000;-1.0206374
2011.0000000;-2.1106315
2012.0000000;-1.8838936
2013.0000000;-0.6286699
2014.0000000;-0.8001633
2015.0000000;-1.7961457