1967.0000000;-0.6262655
1968.0000000;0.3105633
1969.0000000;-0.1945251
1970.0000000;-0.4569038
1971.0000000;-0.6093543
1972.0000000;-0.0471825
1973.0000000;-1.1928881
1974.0000000;-0.7451378
1975.0000000;0.0178710
1976.0000000;-0.9597429
1977.0000000;0.3867536
1978.0000000;0.5325601
1979.0000000;-0.1920124
1980.0000000;0.2979543
1981.0000000;-0.0310811
1982.0000000;-0.1839266
1983.0000000;-0.2941491
1984.0000000;0.4517457
1985.0000000;-0.2151318
1986.0000000;-1.1951284
1987.0000000;-0.2818727
1988.0000000;0.1696950
1989.0000000;-1.3601696
1990.0000000;-1.0172604
1991.0000000;-0.7339150
1992.0000000;-0.6699900
1993.0000000;-0.5787274
1994.0000000;-0.2586341
1995.0000000;0.4650477
1996.0000000;-0.0531372
1997.0000000;-0.4519421
1998.0000000;-1.3514273
1999.0000000;-0.5228471
2000.0000000;-0.7519513
2001.0000000;0.7919722
2002.0000000;-0.5594227
2003.0000000;-2.5168567
2004.0000000;-1.8880379
2005.0000000;-1.9958603
2006.0000000;-1.6959881
2007.0000000;-0.9798318
2008.0000000;-0.7199820
2009.0000000;-2.1251993
2010.0000000;-0.5623934
2011.0000000;-2.1812656
2012.0000000;-1.8722024
2013.0000000;-0.4427248
2014.0000000;-0.8162651
2015.0000000;-2.0877204