1967.0000000;-1.4371214
1968.0000000;-0.4614429
1969.0000000;-0.3036922
1970.0000000;-1.3636222
1971.0000000;-1.4701461
1972.0000000;-0.4077446
1973.0000000;-1.8150584
1974.0000000;-1.0530305
1975.0000000;0.0434726
1976.0000000;-0.9358685
1977.0000000;0.6003687
1978.0000000;0.5749845
1979.0000000;-0.8082880
1980.0000000;0.4137776
1981.0000000;0.1379707
1982.0000000;-0.3656463
1983.0000000;-0.7060347
1984.0000000;0.4649228
1985.0000000;-0.5004053
1986.0000000;-1.4958979
1987.0000000;-1.1536523
1988.0000000;-0.6711191
1989.0000000;-1.6948324
1990.0000000;-1.8029501
1991.0000000;-1.7693901
1992.0000000;-2.0451994
1993.0000000;-0.7179233
1994.0000000;-0.6445023
1995.0000000;0.4367088
1996.0000000;-0.4452890
1997.0000000;-1.0014017
1998.0000000;-2.0089843
1999.0000000;-0.8727980
2000.0000000;-1.4442515
2001.0000000;0.7622751
2002.0000000;-0.4304599
2003.0000000;-2.6438386
2004.0000000;-2.0251975
2005.0000000;-2.1416614
2006.0000000;-1.7702525
2007.0000000;-1.5305274
2008.0000000;-1.1060948
2009.0000000;-1.9888198
2010.0000000;-1.2941384
2011.0000000;-2.2593389
2012.0000000;-2.3355980
2013.0000000;-1.3148656
2014.0000000;-1.2642741
2015.0000000;-2.2574525