1967.0000000;-0.7486565
1968.0000000;0.1678138
1969.0000000;-0.2565408
1970.0000000;-0.0269296
1971.0000000;-1.2476802
1972.0000000;-0.3355765
1973.0000000;-0.5013255
1974.0000000;-1.1826012
1975.0000000;0.0883501
1976.0000000;-1.5877237
1977.0000000;0.4683657
1978.0000000;0.6532657
1979.0000000;-0.1706353
1980.0000000;0.6581261
1981.0000000;0.0242077
1982.0000000;-0.1392797
1983.0000000;-0.4004976
1984.0000000;0.7576435
1985.0000000;-0.5305853
1986.0000000;-1.5956836
1987.0000000;-0.5471367
1988.0000000;-0.1906267
1989.0000000;-1.5738862
1990.0000000;-1.7904420
1991.0000000;-1.2197752
1992.0000000;-1.6069145
1993.0000000;-0.8136802
1994.0000000;-0.7202741
1995.0000000;0.6349141
1996.0000000;-0.8424420
1997.0000000;-1.2323833
1998.0000000;-2.1641543
1999.0000000;-1.1039728
2000.0000000;-1.5611006
2001.0000000;-0.0262374
2002.0000000;-2.0747316
2003.0000000;-3.0850234
2004.0000000;-2.3960385
2005.0000000;-2.7189097
2006.0000000;-2.2183747
2007.0000000;-1.9915621
2008.0000000;-1.9323158
2009.0000000;-3.0760059
2010.0000000;-1.3155811
2011.0000000;-3.0706096
2012.0000000;-2.7614093
2013.0000000;-1.3134997
2014.0000000;-1.2038962
2015.0000000;-2.9517894