1967.0000000;-1.1213404
1968.0000000;-0.6437991
1969.0000000;-1.0759840
1970.0000000;-1.6456205
1971.0000000;-1.3646392
1972.0000000;-0.5906231
1973.0000000;-1.4847852
1974.0000000;-1.2661572
1975.0000000;-0.4895814
1976.0000000;-1.3557227
1977.0000000;0.7051541
1978.0000000;0.4458300
1979.0000000;-0.7681509
1980.0000000;-0.2880422
1981.0000000;-0.4576968
1982.0000000;-0.4406409
1983.0000000;-0.6593448
1984.0000000;0.6746653
1985.0000000;0.0876161
1986.0000000;-1.3441926
1987.0000000;-0.4680929
1988.0000000;-0.6661950
1989.0000000;-1.4227911
1990.0000000;-1.8954436
1991.0000000;-1.9377890
1992.0000000;-1.7980937
1993.0000000;-0.9617394
1994.0000000;-0.5889013
1995.0000000;0.3990244
1996.0000000;-0.3853733
1997.0000000;-1.0386115
1998.0000000;-1.8080853
1999.0000000;-0.8809640
2000.0000000;-1.2999146
2001.0000000;0.5819424
2002.0000000;-0.2086864
2003.0000000;-2.1959243
2004.0000000;-1.9129648
2005.0000000;-1.9913275
2006.0000000;-1.5603266
2007.0000000;-1.1982893
2008.0000000;-1.4058059
2009.0000000;-1.7585173
2010.0000000;-1.1999084
2011.0000000;-1.6976277
2012.0000000;-2.0105371
2013.0000000;-1.1283889
2014.0000000;-1.5985664
2015.0000000;-1.7641292