1967.0000000;-0.7937655
1968.0000000;0.3653850
1969.0000000;-0.0535140
1970.0000000;-0.5820165
1971.0000000;-0.3819941
1972.0000000;0.1661358
1973.0000000;-0.8315095
1974.0000000;-0.6167621
1975.0000000;0.3296139
1976.0000000;-0.5641208
1977.0000000;0.3464036
1978.0000000;0.2469893
1979.0000000;-0.3910764
1980.0000000;-0.0867816
1981.0000000;-0.4121706
1982.0000000;-0.3389954
1983.0000000;-0.1794830
1984.0000000;0.5944108
1985.0000000;-0.0730724
1986.0000000;-1.1731706
1987.0000000;-0.2209317
1988.0000000;-0.0010705
1989.0000000;-1.3952355
1990.0000000;-0.3058149
1991.0000000;-0.6752197
1992.0000000;-0.7044240
1993.0000000;-0.4658273
1994.0000000;-0.1368133
1995.0000000;0.5402146
1996.0000000;0.1398391
1997.0000000;-0.0171639
1998.0000000;-1.1133237
1999.0000000;-0.1173709
2000.0000000;-0.7312516
2001.0000000;0.6882611
2002.0000000;0.1226656
2003.0000000;-2.2793159
2004.0000000;-1.9499403
2005.0000000;-2.0208097
2006.0000000;-1.5178158
2007.0000000;-0.5540708
2008.0000000;-0.3962708
2009.0000000;-1.7946682
2010.0000000;-0.3807301
2011.0000000;-1.9239788
2012.0000000;-1.6890329
2013.0000000;-0.3805491
2014.0000000;-0.6489425
2015.0000000;-1.4248378