1967.0000000;-1.3266046
1968.0000000;-0.1091876
1969.0000000;-0.3222637
1970.0000000;-1.2337005
1971.0000000;-1.2394164
1972.0000000;-0.0335125
1973.0000000;-0.9729511
1974.0000000;-1.0769606
1975.0000000;-0.0448249
1976.0000000;-0.3674075
1977.0000000;0.6635310
1978.0000000;0.5767956
1979.0000000;-1.0358043
1980.0000000;0.1396564
1981.0000000;-0.0305353
1982.0000000;-0.7270560
1983.0000000;-0.8904737
1984.0000000;0.5942280
1985.0000000;-0.3436782
1986.0000000;-1.4132267
1987.0000000;-1.2558644
1988.0000000;-0.7599820
1989.0000000;-1.6698679
1990.0000000;-1.8340427
1991.0000000;-1.8855765
1992.0000000;-1.7946148
1993.0000000;-0.6370720
1994.0000000;-0.5858258
1995.0000000;0.3206405
1996.0000000;-1.2215571
1997.0000000;-1.1450467
1998.0000000;-2.1685123
1999.0000000;-0.9436240
2000.0000000;-1.3059144
2001.0000000;0.8394641
2002.0000000;0.0822142
2003.0000000;-2.5238194
2004.0000000;-2.0795527
2005.0000000;-2.0422497
2006.0000000;-1.7146647
2007.0000000;-1.6673458
2008.0000000;-1.0543592
2009.0000000;-1.8926201
2010.0000000;-1.1874738
2011.0000000;-2.0561314
2012.0000000;-2.1442161
2013.0000000;-1.3947120
2014.0000000;-1.1543920
2015.0000000;-1.3962858