1967.0000000;-1.4600565 1968.0000000;0.0744267 1969.0000000;-0.4913922 1970.0000000;-1.1971238 1971.0000000;-0.8466464 1972.0000000;-0.2053320 1973.0000000;-1.4351718 1974.0000000;-1.3549889 1975.0000000;-0.9805037 1976.0000000;-1.3465604 1977.0000000;0.9727198 1978.0000000;0.5745584 1979.0000000;-0.0634267 1980.0000000;-0.0553625 1981.0000000;-0.9384945 1982.0000000;-0.3985485 1983.0000000;-0.2003598 1984.0000000;0.0159483 1985.0000000;-1.0191295 1986.0000000;-1.3950170 1987.0000000;-0.8980409 1988.0000000;-0.5165454 1989.0000000;-1.6801958 1990.0000000;-1.1973861 1991.0000000;-0.9872046 1992.0000000;-0.8308964 1993.0000000;-0.8139047 1994.0000000;-0.4541674 1995.0000000;-0.3685290 1996.0000000;-0.1293986 1997.0000000;-0.5054844 1998.0000000;-1.6753163 1999.0000000;-1.2759430 2000.0000000;-1.5564697 2001.0000000;1.0001152 2002.0000000;-1.4930359 2003.0000000;-2.4485693