1967.0000000;-0.9612147
1968.0000000;0.2520068
1969.0000000;-0.2129809
1970.0000000;-0.7439824
1971.0000000;-0.6926461
1972.0000000;-0.0513665
1973.0000000;-1.2934701
1974.0000000;-0.8949277
1975.0000000;0.0185068
1976.0000000;-0.8754200
1977.0000000;0.4186625
1978.0000000;0.4389727
1979.0000000;-0.4554679
1980.0000000;0.1450256
1981.0000000;-0.2065812
1982.0000000;-0.2902983
1983.0000000;-0.3765974
1984.0000000;0.3515596
1985.0000000;-0.4434941
1986.0000000;-1.2472912
1987.0000000;-0.4800484
1988.0000000;-0.0991248
1989.0000000;-1.4390073
1990.0000000;-0.9813775
1991.0000000;-0.8270676
1992.0000000;-0.7756181
1993.0000000;-0.5728719
1994.0000000;-0.4278493
1995.0000000;0.2768735
1996.0000000;-0.1539177
1997.0000000;-0.5979294
1998.0000000;-1.5195644
1999.0000000;-0.6517484
2000.0000000;-0.8712606
2001.0000000;0.7425331
2002.0000000;-0.4421822
2003.0000000;-2.5243516
2004.0000000;-1.9069211
2005.0000000;-2.0025554
2006.0000000;-1.7303197
2007.0000000;-0.9036460
2008.0000000;-0.6274549
2009.0000000;-2.0059979
2010.0000000;-0.5330877
2011.0000000;-1.9733346
2012.0000000;-1.6287870
2013.0000000;-0.4316870
2014.0000000;-0.6343385
2015.0000000;-1.6565551