1967.0000000;-2.1773415
1968.0000000;-1.7709013
1969.0000000;-2.1120212
1970.0000000;-1.3270824
1971.0000000;-2.2208304
1972.0000000;-1.1640458
1973.0000000;-2.0714755
1974.0000000;-1.5009868
1975.0000000;-1.2929848
1976.0000000;-1.7850822
1977.0000000;-0.9398913
1978.0000000;-0.6431912
1979.0000000;-1.5441636
1980.0000000;-0.7926196
1981.0000000;-1.0555110
1982.0000000;-0.9636983
1983.0000000;-0.7095150
1984.0000000;0.7747027
1985.0000000;-0.0706251
1986.0000000;-1.8844326
1987.0000000;-1.1167402
1988.0000000;-0.6947147
1989.0000000;-1.7839284
1990.0000000;-1.9505551
1991.0000000;-2.2009869
1992.0000000;-2.2006142
1993.0000000;-1.2716184
1994.0000000;-1.2110878
1995.0000000;0.4674761
1996.0000000;-1.2183945
1997.0000000;-1.4996598
1998.0000000;-2.1446486
1999.0000000;-1.1214201
2000.0000000;-1.8786128
2001.0000000;0.0727182
2002.0000000;-1.8523796
2003.0000000;-3.0529175