1967.0000000;-0.4886770
1968.0000000;-0.1224671
1969.0000000;-0.5522192
1970.0000000;-0.5313659
1971.0000000;-1.3641713
1972.0000000;-0.4869009
1973.0000000;-0.9957767
1974.0000000;-0.7507749
1975.0000000;-0.5383021
1976.0000000;-1.1177664
1977.0000000;0.2362586
1978.0000000;0.4547113
1979.0000000;-0.0811770
1980.0000000;0.4785984
1981.0000000;0.3698928
1982.0000000;0.0869987
1983.0000000;-0.1515110
1984.0000000;0.9114766
1985.0000000;0.3098212
1986.0000000;-1.1339009
1987.0000000;-0.0935407
1988.0000000;0.3450407
1989.0000000;-1.3217093
1990.0000000;-1.4884033
1991.0000000;-0.9239540
1992.0000000;-1.6417562
1993.0000000;-0.5935401
1994.0000000;-0.3825967
1995.0000000;0.6735394
1996.0000000;-0.0744059
1997.0000000;-0.7872576
1998.0000000;-1.5185688
1999.0000000;-0.7000785
2000.0000000;-0.7899774
2001.0000000;0.7885460
2002.0000000;-0.5350991
2003.0000000;-2.1679580
2004.0000000;-1.6522696
2005.0000000;-1.8617539
2006.0000000;-0.9231891
2007.0000000;-0.3739843
2008.0000000;-0.7592065
2009.0000000;-1.6779107
2010.0000000;-0.5692334
2011.0000000;-1.7909443
2012.0000000;-1.7184987
2013.0000000;-0.4657075
2014.0000000;-0.9555333
2015.0000000;-1.8250791