1967.0000000;-1.2582195
1968.0000000;0.5636930
1969.0000000;-0.8403447
1970.0000000;-0.5438998
1971.0000000;-1.3777758
1972.0000000;-0.5222391
1973.0000000;-0.7263014
1974.0000000;-0.9323118
1975.0000000;-1.0646896
1976.0000000;-1.3683366
1977.0000000;0.0140885
1978.0000000;-0.0065782
1979.0000000;-0.3631029
1980.0000000;-0.2393557
1981.0000000;-0.1055959
1982.0000000;-0.1676636
1983.0000000;-0.3266267
1984.0000000;1.0327992
1985.0000000;0.7292294
1986.0000000;-1.1497272
1987.0000000;-0.4562231
1988.0000000;-0.2290954
1989.0000000;-1.3000214
1990.0000000;-1.4567213
1991.0000000;-1.5362849
1992.0000000;-1.6321173
1993.0000000;-0.9257008
1994.0000000;-0.7771551
1995.0000000;0.4903927
1996.0000000;-0.3134854
1997.0000000;-0.9191418
1998.0000000;-1.7984034
1999.0000000;-0.7366623
2000.0000000;-1.2160578
2001.0000000;0.9209715
2002.0000000;-0.2672107
2003.0000000;-2.1363287
2004.0000000;-1.9290495
2005.0000000;-1.9054577
2006.0000000;-1.2475770
2007.0000000;-1.0928012
2008.0000000;-1.4556280
2009.0000000;-1.8918478
2010.0000000;-1.0641106
2011.0000000;-1.8787160
2012.0000000;-2.0242295
2013.0000000;-1.0989685
2014.0000000;-1.2188177
2015.0000000;-1.8818448