1967.0000000;-1.4986449
1968.0000000;-0.2320104
1969.0000000;-0.4310912
1970.0000000;-1.1897578
1971.0000000;-1.4510765
1972.0000000;-0.1295306
1973.0000000;-1.1197066
1974.0000000;-1.2319219
1975.0000000;-0.2668133
1976.0000000;-0.5823644
1977.0000000;0.5605366
1978.0000000;0.4469060
1979.0000000;-1.1061057
1980.0000000;-0.0626237
1981.0000000;-0.2506142
1982.0000000;-0.9965571
1983.0000000;-1.0155628
1984.0000000;0.5987154
1985.0000000;-0.5851061
1986.0000000;-1.4248344
1987.0000000;-1.3351915
1988.0000000;-1.1143292
1989.0000000;-1.7196336
1990.0000000;-1.7312956
1991.0000000;-1.9285052
1992.0000000;-1.8139100
1993.0000000;-0.8452790
1994.0000000;-0.8225167
1995.0000000;0.2383172
1996.0000000;-1.1661143
1997.0000000;-1.1499631
1998.0000000;-2.1361351
1999.0000000;-1.0669417
2000.0000000;-1.2213361
2001.0000000;0.6996199
2002.0000000;0.0929988
2003.0000000;-2.4251893
2004.0000000;-2.0757184
2005.0000000;-1.9894292
2006.0000000;-1.7007773
2007.0000000;-1.6551433
2008.0000000;-1.1975164
2009.0000000;-1.8700860
2010.0000000;-1.2674937
2011.0000000;-2.0921853
2012.0000000;-2.1621842
2013.0000000;-1.4872377
2014.0000000;-1.3051881
2015.0000000;-1.6799507