1967.0000000;-1.2301817
1968.0000000;-0.1665666
1969.0000000;-0.1768172
1970.0000000;-1.0369283
1971.0000000;-1.1418278
1972.0000000;-0.2302649
1973.0000000;-1.0968084
1974.0000000;-1.0858786
1975.0000000;-0.1751730
1976.0000000;-0.6744980
1977.0000000;0.5504872
1978.0000000;0.4864561
1979.0000000;-0.8099600
1980.0000000;0.3427232
1981.0000000;-0.1378379
1982.0000000;-0.4856273
1983.0000000;-0.6409773
1984.0000000;0.4830078
1985.0000000;-0.1393147
1986.0000000;-1.3308735
1987.0000000;-0.8097291
1988.0000000;-0.7549998
1989.0000000;-1.5435064
1990.0000000;-1.6226685
1991.0000000;-1.6395776
1992.0000000;-1.7003584
1993.0000000;-0.7816302
1994.0000000;-0.5764744
1995.0000000;0.3255180
1996.0000000;-0.3786057
1997.0000000;-0.9716867
1998.0000000;-1.8127439
1999.0000000;-0.9202077
2000.0000000;-1.3151780
2001.0000000;0.6835170
2002.0000000;-0.3023466
2003.0000000;-2.3832803
2004.0000000;-1.8619561
2005.0000000;-1.9196653
2006.0000000;-1.6057408
2007.0000000;-1.3726099
2008.0000000;-1.1884753
2009.0000000;-1.7877353
2010.0000000;-1.1969709
2011.0000000;-2.0205455
2012.0000000;-2.0651660
2013.0000000;-1.1726571
2014.0000000;-1.3322985
2015.0000000;-2.0153503