1967.0000000;-2.0827446
1968.0000000;-1.8382280
1969.0000000;-2.4110737
1970.0000000;-1.8105837
1971.0000000;-2.3565028
1972.0000000;-1.0736773
1973.0000000;-2.4010859
1974.0000000;-1.6516584
1975.0000000;-1.3818505
1976.0000000;-1.9288118
1977.0000000;-0.5827080
1978.0000000;-0.4338493
1979.0000000;-1.8009984
1980.0000000;-0.5634129
1981.0000000;-1.4996459
1982.0000000;-2.2514162
1983.0000000;-0.9829183
1984.0000000;0.0245583
1985.0000000;-1.5843513
1986.0000000;-2.1798358
1987.0000000;-1.7631190
1988.0000000;-1.3075649
1989.0000000;-1.9862473
1990.0000000;-1.6733565
1991.0000000;-1.8669581
1992.0000000;-1.6977086
1993.0000000;-1.4709598
1994.0000000;-1.6390029
1995.0000000;-0.2673153
1996.0000000;-1.9118259
1997.0000000;-2.3850899
1998.0000000;-2.4790406
1999.0000000;-1.6253031
2000.0000000;-2.2660458
2001.0000000;-1.3211110
2002.0000000;-2.4450951
2003.0000000;-3.7334254