1967.0000000;-0.4245428
1968.0000000;0.0286324
1969.0000000;-0.3731308
1970.0000000;-0.5575638
1971.0000000;-0.8277066
1972.0000000;-0.2225184
1973.0000000;-0.4117539
1974.0000000;-0.5612979
1975.0000000;0.1028197
1976.0000000;-1.4099016
1977.0000000;0.0656198
1978.0000000;-0.1174553
1979.0000000;-0.6439201
1980.0000000;-0.1070694
1981.0000000;-0.4735714
1982.0000000;-0.4730700
1983.0000000;-0.2087921
1984.0000000;0.3206112
1985.0000000;-0.0453176
1986.0000000;-1.6123567
1987.0000000;-0.3441620
1988.0000000;-0.5504857
1989.0000000;-1.1011479
1990.0000000;-0.9066983
1991.0000000;-0.8170743
1992.0000000;-0.9862677
1993.0000000;-0.5627420
1994.0000000;-0.6139940
1995.0000000;0.1953916
1996.0000000;-0.0427219
1997.0000000;-0.9429901
1998.0000000;-1.6222818
1999.0000000;-0.3868535
2000.0000000;-1.1786873
2001.0000000;0.3097911
2002.0000000;-0.1711623
2003.0000000;-2.2498031
2004.0000000;-1.9382602
2005.0000000;-2.1087387
2006.0000000;-1.4887662
2007.0000000;-0.4471278
2008.0000000;-1.2167231
2009.0000000;-2.2203131
2010.0000000;-0.4289991
2011.0000000;-2.3351641
2012.0000000;-2.1161437
2013.0000000;-0.6752039
2014.0000000;-0.6122766
2015.0000000;-2.0697439