1967.0000000;-1.2396896
1968.0000000;0.2194665
1969.0000000;-0.3500981
1970.0000000;-1.0158037
1971.0000000;-0.7675442
1972.0000000;-0.0424446
1973.0000000;-1.1327754
1974.0000000;-1.0829422
1975.0000000;-0.8215074
1976.0000000;-1.1580100
1977.0000000;0.7977538
1978.0000000;0.3931401
1979.0000000;-0.3149794
1980.0000000;-0.2414712
1981.0000000;-0.9796795
1982.0000000;-0.5959634
1983.0000000;-0.0645505
1984.0000000;0.1839425
1985.0000000;-0.9219748
1986.0000000;-1.3488922
1987.0000000;-0.7001874
1988.0000000;-0.5924077
1989.0000000;-1.5835948
1990.0000000;-0.8357469
1991.0000000;-0.9387341
1992.0000000;-0.7136893
1993.0000000;-0.7520511
1994.0000000;-0.4663857
1995.0000000;0.0476535
1996.0000000;0.1378403
1997.0000000;-0.4008147
1998.0000000;-1.5173753
1999.0000000;-1.0539585
2000.0000000;-1.3893995
2001.0000000;0.8378183
2002.0000000;-0.8512467
2003.0000000;-2.2036636
2004.0000000;-1.9315612
2005.0000000;-2.1441600
2006.0000000;-1.6020808
2007.0000000;-1.6188045
2008.0000000;-0.7800174
2009.0000000;-1.8339355
2010.0000000;-0.7436438
2011.0000000;-2.1875982
2012.0000000;-1.8249401
2013.0000000;-0.9387293
2014.0000000;-1.1714923
2015.0000000;-2.0554919