1967.0000000;-0.5324826
1968.0000000;0.7169305
1969.0000000;-0.4841991
1970.0000000;-0.2905776
1971.0000000;-1.1867820
1972.0000000;-0.4135849
1973.0000000;-0.7261683
1974.0000000;-0.8340328
1975.0000000;-0.7282107
1976.0000000;-1.2144231
1977.0000000;-0.0268494
1978.0000000;0.2347907
1979.0000000;-0.2211764
1980.0000000;0.2700506
1981.0000000;0.1531906
1982.0000000;-0.1242144
1983.0000000;-0.1327792
1984.0000000;1.4793133
1985.0000000;0.8885756
1986.0000000;-1.0594976
1987.0000000;0.1848600
1988.0000000;0.4275070
1989.0000000;-1.1515398
1990.0000000;-1.6106281
1991.0000000;-1.3693454
1992.0000000;-1.5990843
1993.0000000;-0.7154647
1994.0000000;-0.4722898
1995.0000000;0.7277025
1996.0000000;0.0702222
1997.0000000;-0.7492418
1998.0000000;-1.5538595
1999.0000000;-0.6737010
2000.0000000;-0.8424239
2001.0000000;0.7937909
2002.0000000;-0.2711604
2003.0000000;-2.0795257
2004.0000000;-1.8422874
2005.0000000;-1.7671685
2006.0000000;-1.1116834
2007.0000000;-0.6923983
2008.0000000;-1.4053328
2009.0000000;-1.6879882
2010.0000000;-0.6799408
2011.0000000;-1.8694234
2012.0000000;-2.0106192
2013.0000000;-0.8597437
2014.0000000;-0.8938844
2015.0000000;-1.7874010