1967.0000000;-0.5813167
1968.0000000;1.1447430
1969.0000000;-1.3210750
1970.0000000;-0.3399533
1971.0000000;-1.1392220
1972.0000000;-0.9461200
1973.0000000;-0.4693078
1974.0000000;-0.8692976
1975.0000000;-0.8072408
1976.0000000;-1.6613522
1977.0000000;0.4917433
1978.0000000;0.2412684
1979.0000000;0.1258256
1980.0000000;0.4358099
1981.0000000;-0.2456443
1982.0000000;-0.0975677
1983.0000000;-0.0420984
1984.0000000;1.9564656
1985.0000000;1.4521631
1986.0000000;-1.2958041
1987.0000000;0.6950133
1988.0000000;-0.3003912
1989.0000000;-1.2037539
1990.0000000;-1.3139820
1991.0000000;-1.6176338
1992.0000000;-1.2950802
1993.0000000;-0.5194169
1994.0000000;-0.1760345
1995.0000000;0.9382902
1996.0000000;0.2310836
1997.0000000;-0.5677969
1998.0000000;-1.9302747
1999.0000000;-0.2629516
2000.0000000;-0.7697436
2001.0000000;0.9331766
2002.0000000;-0.4582818
2003.0000000;-2.1874237
2004.0000000;-2.0731280
2005.0000000;-2.0443959
2006.0000000;-1.2632489
2007.0000000;-0.8797811
2008.0000000;-1.6914382
2009.0000000;-2.9570546
2010.0000000;-1.5634532
2011.0000000;-2.8268096
2012.0000000;-2.9358745
2013.0000000;-1.8355471
2014.0000000;-1.8739114
2015.0000000;-3.1419861