1967.0000000;-1.3324611
1968.0000000;0.3588277
1969.0000000;-0.7497336
1970.0000000;-0.6252450
1971.0000000;-1.4627364
1972.0000000;-0.5298080
1973.0000000;-0.8011105
1974.0000000;-0.9545670
1975.0000000;-0.4173016
1976.0000000;-1.3466589
1977.0000000;-0.0659544
1978.0000000;0.3536232
1979.0000000;-0.1697679
1980.0000000;0.0695984
1981.0000000;0.0387546
1982.0000000;0.0862136
1983.0000000;-0.2697255
1984.0000000;0.9416912
1985.0000000;0.4501221
1986.0000000;-1.2350473
1987.0000000;-0.2715272
1988.0000000;0.3072125
1989.0000000;-1.3881019
1990.0000000;-1.6656771
1991.0000000;-1.6886722
1992.0000000;-1.3508339
1993.0000000;-0.6020331
1994.0000000;-0.3774384
1995.0000000;0.6631756
1996.0000000;-0.1599907
1997.0000000;-0.7727906
1998.0000000;-1.6725214
1999.0000000;-0.7422858
2000.0000000;-0.8486435
2001.0000000;0.7589337
2002.0000000;-0.2288391
2003.0000000;-2.1408241
2004.0000000;-1.7553357
2005.0000000;-1.8849125
2006.0000000;-1.3193350
2007.0000000;-0.7750580
2008.0000000;-1.4740496
2009.0000000;-2.0586271
2010.0000000;-0.9864582
2011.0000000;-1.9572315
2012.0000000;-2.0704792
2013.0000000;-0.7435311
2014.0000000;-0.9363477
2015.0000000;-1.8965292