1967.0000000;-0.6939493
1968.0000000;0.1943504
1969.0000000;-0.2485722
1970.0000000;-0.4385033
1971.0000000;-0.7469519
1972.0000000;-0.2417859
1973.0000000;-1.4626725
1974.0000000;-1.0527220
1975.0000000;-0.0913559
1976.0000000;-1.2453963
1977.0000000;0.5629864
1978.0000000;0.5736501
1979.0000000;-0.1676606
1980.0000000;0.4335828
1981.0000000;0.0711930
1982.0000000;-0.1886180
1983.0000000;-0.2756111
1984.0000000;0.2454277
1985.0000000;-0.4187875
1986.0000000;-1.2622098
1987.0000000;-0.3418801
1988.0000000;-0.0811977
1989.0000000;-1.4552383
1990.0000000;-1.3735805
1991.0000000;-0.7348540
1992.0000000;-0.5494465
1993.0000000;-0.5687981
1994.0000000;-0.4242560
1995.0000000;0.4284348
1996.0000000;-0.1520780
1997.0000000;-0.7839800
1998.0000000;-1.5122268
1999.0000000;-0.7030865
2000.0000000;-0.9151329
2001.0000000;0.3433319
2002.0000000;-1.3654261
2003.0000000;-2.7369392
2004.0000000;-1.6912349
2005.0000000;-1.9427869
2006.0000000;-1.7629416
2007.0000000;-1.5325391
2008.0000000;-1.1212693
2009.0000000;-2.1684637
2010.0000000;-0.6875547
2011.0000000;-2.0925298
2012.0000000;-1.8353121
2013.0000000;-0.5262692
2014.0000000;-0.8948290
2015.0000000;-2.0940650