1967.0000000;-1.5150924
1968.0000000;0.1318088
1969.0000000;-0.2715916
1970.0000000;-1.1608264
1971.0000000;-1.3865782
1972.0000000;-0.0816115
1973.0000000;-1.4121578
1974.0000000;-1.2172036
1975.0000000;-0.3864667
1976.0000000;-0.5969776
1977.0000000;0.6009097
1978.0000000;0.3082651
1979.0000000;-1.2350870
1980.0000000;-0.0040192
1981.0000000;-0.4056144
1982.0000000;-1.0618775
1983.0000000;-0.4192265
1984.0000000;0.6960967
1985.0000000;-0.0080307
1986.0000000;-1.4127403
1987.0000000;-1.0749710
1988.0000000;-0.8145913
1989.0000000;-1.6423707
1990.0000000;-1.6395441
1991.0000000;-1.8497851
1992.0000000;-1.8444538
1993.0000000;-0.9537118
1994.0000000;-0.6776147
1995.0000000;0.2494377
1996.0000000;-0.6370179
1997.0000000;-1.0617034
1998.0000000;-1.9403157
1999.0000000;-0.8466963
2000.0000000;-1.4452788
2001.0000000;0.7607631
2002.0000000;-0.3761536
2003.0000000;-2.5276995
2004.0000000;-2.0703897
2005.0000000;-1.9645635
2006.0000000;-1.7388730
2007.0000000;-1.5968509
2008.0000000;-1.4941490
2009.0000000;-1.7615626
2010.0000000;-1.3583956
2011.0000000;-2.1019652
2012.0000000;-2.1575322
2013.0000000;-1.2139561
2014.0000000;-1.3148936
2015.0000000;-1.9083270