1967.0000000;-1.0675280
1968.0000000;0.1604861
1969.0000000;-0.1276970
1970.0000000;-0.7883396
1971.0000000;-0.4553175
1972.0000000;-0.1041158
1973.0000000;-1.3620691
1974.0000000;-0.8025279
1975.0000000;-0.6671855
1976.0000000;-0.7282807
1977.0000000;0.7641926
1978.0000000;0.5642717
1979.0000000;0.2817233
1980.0000000;0.0967659
1981.0000000;-0.5077303
1982.0000000;-0.0777836
1983.0000000;-0.2213269
1984.0000000;0.1429674
1985.0000000;-0.6397460
1986.0000000;-1.2407979
1987.0000000;-0.6978260
1988.0000000;-0.2846224
1989.0000000;-1.6137326
1990.0000000;-0.9293402
1991.0000000;-0.8132808
1992.0000000;-0.9293936
1993.0000000;-0.6710123
1994.0000000;-0.5311341
1995.0000000;-0.0669436
1996.0000000;0.0907807
1997.0000000;-0.5815365
1998.0000000;-1.5946972
1999.0000000;-1.1985598
2000.0000000;-1.5223701
2001.0000000;0.8382471
2002.0000000;-1.0466878
2003.0000000;-2.3888216