1967.0000000;-0.8268504
1968.0000000;0.2098268
1969.0000000;-0.4194890
1970.0000000;-0.7863848
1971.0000000;-0.7800035
1972.0000000;-0.0737896
1973.0000000;-1.5172420
1974.0000000;-0.9014372
1975.0000000;-0.0014595
1976.0000000;-1.0917761
1977.0000000;0.5773964
1978.0000000;0.4925548
1979.0000000;-0.2685503
1980.0000000;0.2415562
1981.0000000;-0.1572731
1982.0000000;-0.2161849
1983.0000000;-0.2631639
1984.0000000;0.3126290
1985.0000000;-0.5707350
1986.0000000;-1.2689157
1987.0000000;-0.3693162
1988.0000000;0.0255474
1989.0000000;-1.5635016
1990.0000000;-1.0509465
1991.0000000;-0.6507880
1992.0000000;-0.7722547
1993.0000000;-0.4872608
1994.0000000;-0.1987821
1995.0000000;0.4000750
1996.0000000;0.0574872
1997.0000000;-0.2415849
1998.0000000;-1.3290937
1999.0000000;-0.4820364
2000.0000000;-0.7566555
2001.0000000;0.9412959
2002.0000000;-0.2461378
2003.0000000;-2.3286231
2004.0000000;-1.8574247
2005.0000000;-2.1191134
2006.0000000;-1.5932209
2007.0000000;-0.7547773
2008.0000000;-0.4334880
2009.0000000;-1.7938733
2010.0000000;-0.4651319
2011.0000000;-1.8853283
2012.0000000;-1.6452025
2013.0000000;-0.3746411
2014.0000000;-0.6727716
2015.0000000;-1.6431367