1967.0000000;-0.2150056
1968.0000000;-0.5766952
1969.0000000;-0.7329223
1970.0000000;-0.6652021
1971.0000000;-1.3617313
1972.0000000;-0.6809292
1973.0000000;-0.9445376
1974.0000000;-0.7146342
1975.0000000;-0.3748603
1976.0000000;-1.3085011
1977.0000000;0.3438737
1978.0000000;0.5136684
1979.0000000;0.2229741
1980.0000000;0.8637770
1981.0000000;0.3267683
1982.0000000;0.0279858
1983.0000000;-0.0715278
1984.0000000;0.7101476
1985.0000000;0.1840008
1986.0000000;-1.2773851
1987.0000000;0.3643513
1988.0000000;0.3547715
1989.0000000;-1.0474024
1990.0000000;-1.3832101
1991.0000000;-0.9959049
1992.0000000;-0.7616498
1993.0000000;-0.4499869
1994.0000000;-0.4082249
1995.0000000;1.0675800
1996.0000000;-0.3341018
1997.0000000;-0.7744122
1998.0000000;-1.3952376
1999.0000000;-0.5159178
2000.0000000;-1.1655328
2001.0000000;0.5325470
2002.0000000;-1.1696565
2003.0000000;-2.9093575
2004.0000000;-1.1343808
2005.0000000;-2.1158302
2006.0000000;-0.7743984
2007.0000000;-0.7528870
2008.0000000;-1.2650297
2009.0000000;-2.7760117
2010.0000000;-0.3921916
2011.0000000;-2.6397858
2012.0000000;-2.1095307
2013.0000000;-0.4550480
2014.0000000;-0.8358639
2015.0000000;-2.1362514