1967.0000000;-1.0010500
1968.0000000;0.2492368
1969.0000000;-0.3164130
1970.0000000;-0.8231765
1971.0000000;-0.6185763
1972.0000000;-0.0764107
1973.0000000;-1.4683261
1974.0000000;-1.0136186
1975.0000000;0.1271705
1976.0000000;-1.1614969
1977.0000000;0.6439157
1978.0000000;0.5440438
1979.0000000;-0.3439287
1980.0000000;0.2706876
1981.0000000;-0.1742228
1982.0000000;-0.2318915
1983.0000000;-0.3092282
1984.0000000;0.3771875
1985.0000000;-0.5247770
1986.0000000;-1.2769809
1987.0000000;-0.3399134
1988.0000000;0.0718449
1989.0000000;-1.6149911
1990.0000000;-1.1965827
1991.0000000;-0.7839245
1992.0000000;-0.8613284
1993.0000000;-0.5639280
1994.0000000;-0.2287097
1995.0000000;0.3505206
1996.0000000;-0.1485872
1997.0000000;-0.3663662
1998.0000000;-1.5062903
1999.0000000;-0.5144986
2000.0000000;-0.8721656
2001.0000000;0.9052175
2002.0000000;-0.6529722
2003.0000000;-2.6053975
2004.0000000;-2.0232232
2005.0000000;-2.2120490
2006.0000000;-1.8385437
2007.0000000;-1.3709588
2008.0000000;-0.7990572
2009.0000000;-2.1795473
2010.0000000;-0.7948957
2011.0000000;-2.2832313
2012.0000000;-1.9579439
2013.0000000;-0.5809902
2014.0000000;-0.9325849
2015.0000000;-2.0509932