1967.0000000;-1.1503264
1968.0000000;-0.1197636
1969.0000000;-0.3232336
1970.0000000;-1.2045631
1971.0000000;-0.5485595
1972.0000000;-0.2369675
1973.0000000;-1.5063906
1974.0000000;-0.7483199
1975.0000000;-0.7243948
1976.0000000;-0.9417850
1977.0000000;0.6911938
1978.0000000;0.4792531
1979.0000000;0.2273551
1980.0000000;-0.0254627
1981.0000000;-0.4657222
1982.0000000;-0.2790805
1983.0000000;-0.1070366
1984.0000000;0.0727709
1985.0000000;-0.3796883
1986.0000000;-1.3124266
1987.0000000;-0.9203386
1988.0000000;-0.4171814
1989.0000000;-1.5128964
1990.0000000;-0.8162479
1991.0000000;-0.4396650
1992.0000000;-0.7214426
1993.0000000;-0.6598419
1994.0000000;-0.5357074
1995.0000000;-0.0785504
1996.0000000;0.1770440
1997.0000000;-0.2349063
1998.0000000;-1.4578834
1999.0000000;-1.4446583
2000.0000000;-1.3660016
2001.0000000;0.9627504
2002.0000000;-0.9433714
2003.0000000;-2.6754630
2004.0000000;-1.2593918
2005.0000000;-2.2267408
2006.0000000;-1.6000149
2007.0000000;-1.5866921
2008.0000000;-1.1703515
2009.0000000;-1.9342966
2010.0000000;-0.4761047
2011.0000000;-2.1856163
2012.0000000;-1.8848686
2013.0000000;-0.7968010
2014.0000000;-0.9749891
2015.0000000;-2.4612567