1967.0000000;-0.4419704
1968.0000000;0.8337605
1969.0000000;-0.4893126
1970.0000000;-0.1807756
1971.0000000;-0.4638264
1972.0000000;-0.5778115
1973.0000000;-0.6336846
1974.0000000;-0.7619008
1975.0000000;-0.7514232
1976.0000000;-1.2656009
1977.0000000;0.4108604
1978.0000000;0.2656119
1979.0000000;0.1498492
1980.0000000;0.6129082
1981.0000000;0.0617098
1982.0000000;-0.2426864
1983.0000000;0.0053054
1984.0000000;2.0530267
1985.0000000;1.3204498
1986.0000000;-1.2543961
1987.0000000;0.5817299
1988.0000000;0.3330078
1989.0000000;-0.7987885
1990.0000000;-1.4943644
1991.0000000;-1.1701208
1992.0000000;-1.1085310
1993.0000000;-0.5774041
1994.0000000;0.0054893
1995.0000000;1.1758109
1996.0000000;0.2354476
1997.0000000;-0.4308298
1998.0000000;-1.6558100
1999.0000000;-0.2649533
2000.0000000;-0.6325785
2001.0000000;1.0068102
2002.0000000;-0.0590525
2003.0000000;-2.1339674
2004.0000000;-1.9278686
2005.0000000;-1.9155574
2006.0000000;-1.0335391
2007.0000000;-0.3958549
2008.0000000;-1.4800277
2009.0000000;-2.6191158
2010.0000000;-0.9322478
2011.0000000;-2.5374415
2012.0000000;-2.6714473
2013.0000000;-1.2966378
2014.0000000;-1.2910211
2015.0000000;-2.7394235