1967.0000000;-0.6892554
1968.0000000;0.2171624
1969.0000000;-0.1037774
1970.0000000;-0.5432978
1971.0000000;-0.5206237
1972.0000000;-0.0599442
1973.0000000;-1.2490096
1974.0000000;-0.7936711
1975.0000000;0.0145286
1976.0000000;-0.9842913
1977.0000000;0.5162966
1978.0000000;0.5213551
1979.0000000;-0.1466942
1980.0000000;0.3242007
1981.0000000;-0.0695260
1982.0000000;-0.1789263
1983.0000000;-0.3111438
1984.0000000;0.2326248
1985.0000000;-0.3107354
1986.0000000;-1.1666594
1987.0000000;-0.2392315
1988.0000000;0.0797317
1989.0000000;-1.5164466
1990.0000000;-1.1624761
1991.0000000;-0.6490463
1992.0000000;-0.7829835
1993.0000000;-0.5588971
1994.0000000;-0.2325107
1995.0000000;0.3150644
1996.0000000;-0.0353977
1997.0000000;-0.4756104
1998.0000000;-1.3378303
1999.0000000;-0.4888647
2000.0000000;-0.6552128
2001.0000000;0.8549174
2002.0000000;-0.4788780
2003.0000000;-2.3520880
2004.0000000;-1.6294328
2005.0000000;-1.8299563
2006.0000000;-1.4572293
2007.0000000;-0.7880781
2008.0000000;-0.3375848
2009.0000000;-1.6618540
2010.0000000;-0.3756098
2011.0000000;-1.4930854
2012.0000000;-1.2635638
2013.0000000;-0.2418281
2014.0000000;-0.5736628
2015.0000000;-1.0806973