1967.0000000;-0.5569269
1968.0000000;-0.0955646
1969.0000000;-0.4822336
1970.0000000;-0.7145299
1971.0000000;-0.8338794
1972.0000000;-0.3182262
1973.0000000;-1.3860573
1974.0000000;-0.7956418
1975.0000000;-0.3612586
1976.0000000;-0.9778392
1977.0000000;0.3347144
1978.0000000;0.4943401
1979.0000000;-0.1766721
1980.0000000;0.2674893
1981.0000000;0.0675666
1982.0000000;-0.1762012
1983.0000000;-0.2140322
1984.0000000;0.3226506
1985.0000000;-0.3529777
1986.0000000;-1.4431570
1987.0000000;-0.4256177
1988.0000000;-0.1063738
1989.0000000;-1.3312652
1990.0000000;-0.9928582
1991.0000000;-0.6478212
1992.0000000;-0.5232012
1993.0000000;-0.6097081
1994.0000000;-0.5104562
1995.0000000;0.4460390
1996.0000000;-0.1484643
1997.0000000;-0.7894005
1998.0000000;-1.6780162
1999.0000000;-0.8661363
2000.0000000;-1.2650611
2001.0000000;0.2063442
2002.0000000;-1.2990849
2003.0000000;-2.9662237
2004.0000000;-1.5909948
2005.0000000;-2.0846474
2006.0000000;-1.8595344
2007.0000000;-1.1887226
2008.0000000;-1.2090223
2009.0000000;-2.2031066
2010.0000000;-0.4471753
2011.0000000;-2.1523547
2012.0000000;-1.7182646
2013.0000000;-0.4634880
2014.0000000;-0.5672139
2015.0000000;-1.9859748