1967.0000000;-0.7464229
1968.0000000;1.0687866
1969.0000000;-1.2476175
1970.0000000;-0.5293351
1971.0000000;-1.2060499
1972.0000000;-0.9833201
1973.0000000;-0.6723994
1974.0000000;-0.8846005
1975.0000000;-0.8729311
1976.0000000;-1.6794820
1977.0000000;0.3600958
1978.0000000;0.1944873
1979.0000000;0.0935350
1980.0000000;0.4394851
1981.0000000;-0.0507606
1982.0000000;-0.1984962
1983.0000000;-0.1352882
1984.0000000;1.7628920
1985.0000000;1.0879873
1986.0000000;-1.4804704
1987.0000000;0.0668894
1988.0000000;-0.3251668
1989.0000000;-1.2909130
1990.0000000;-1.7060655
1991.0000000;-1.7866763
1992.0000000;-1.3688390
1993.0000000;-0.6204484
1994.0000000;-0.3544162
1995.0000000;0.8584834
1996.0000000;0.0855124
1997.0000000;-0.7949516
1998.0000000;-1.9525355
1999.0000000;-0.5429609
2000.0000000;-1.0504670
2001.0000000;0.8609506
2002.0000000;-0.2897117
2003.0000000;-2.3676653
2004.0000000;-2.0306349
2005.0000000;-1.9549356
2006.0000000;-1.3492457
2007.0000000;-0.7280473
2008.0000000;-1.5613776
2009.0000000;-2.6346626
2010.0000000;-1.2128175
2011.0000000;-2.2017801
2012.0000000;-2.3225851
2013.0000000;-1.1398284
2014.0000000;-1.0248169
2015.0000000;-1.7563307