1967.0000000;-0.7364237
1968.0000000;0.6509829
1969.0000000;-0.3728400
1970.0000000;-0.2719037
1971.0000000;-0.9320623
1972.0000000;-0.3932007
1973.0000000;-0.9353871
1974.0000000;-0.9193635
1975.0000000;-0.7038343
1976.0000000;-1.1675720
1977.0000000;0.0928107
1978.0000000;0.1718815
1979.0000000;-0.1062837
1980.0000000;0.1472155
1981.0000000;0.0329003
1982.0000000;-0.1963633
1983.0000000;-0.1029339
1984.0000000;1.2917140
1985.0000000;1.0159632
1986.0000000;-1.0208071
1987.0000000;0.4830305
1988.0000000;0.5154040
1989.0000000;-1.2461233
1990.0000000;-1.5476124
1991.0000000;-1.1734085
1992.0000000;-1.6780739
1993.0000000;-0.7217494
1994.0000000;-0.4020473
1995.0000000;0.6940703
1996.0000000;-0.0068499
1997.0000000;-0.8794365
1998.0000000;-1.6098547
1999.0000000;-0.6791301
2000.0000000;-0.9675572
2001.0000000;0.8752885
2002.0000000;-0.3887884
2003.0000000;-2.1097522
2004.0000000;-1.8048034
2005.0000000;-1.7526346
2006.0000000;-0.9397763
2007.0000000;-0.7428911
2008.0000000;-1.3244176
2009.0000000;-1.5828817
2010.0000000;-0.8312970
2011.0000000;-1.7794600
2012.0000000;-1.8776076
2013.0000000;-0.6149524
2014.0000000;-1.0502387
2015.0000000;-1.5925230