1967.0000000;-0.7563742
1968.0000000;0.0418423
1969.0000000;-0.5185012
1970.0000000;-0.9276604
1971.0000000;-0.9582627
1972.0000000;-0.2372360
1973.0000000;-1.5825475
1974.0000000;-0.9719160
1975.0000000;-0.4712308
1976.0000000;-1.1245613
1977.0000000;0.4706186
1978.0000000;0.4256970
1979.0000000;-0.2467133
1980.0000000;0.2336480
1981.0000000;-0.0531243
1982.0000000;-0.2826715
1983.0000000;-0.2651921
1984.0000000;0.2137052
1985.0000000;-0.4042454
1986.0000000;-1.3414083
1987.0000000;-0.5507708
1988.0000000;-0.1606326
1989.0000000;-1.3137391
1990.0000000;-1.1437201
1991.0000000;-0.6400648
1992.0000000;-0.6509282
1993.0000000;-0.5889806
1994.0000000;-0.6044809
1995.0000000;0.3261102
1996.0000000;-0.0846288
1997.0000000;-0.8877828
1998.0000000;-1.6304333
1999.0000000;-0.8278396
2000.0000000;-1.2387421
2001.0000000;0.4700122
2002.0000000;-1.1921730
2003.0000000;-2.9143376