1967.0000000;-0.2303219
1968.0000000;-0.0471823
1969.0000000;-0.3822391
1970.0000000;-0.2803183
1971.0000000;-1.2931528
1972.0000000;-0.4463307
1973.0000000;-0.8736312
1974.0000000;-0.6308049
1975.0000000;-0.0891640
1976.0000000;-1.2394233
1977.0000000;0.6495711
1978.0000000;0.9709765
1979.0000000;0.3086745
1980.0000000;0.9183775
1981.0000000;0.5811713
1982.0000000;0.2538352
1983.0000000;0.0021415
1984.0000000;0.6278240
1985.0000000;0.0002714
1986.0000000;-1.4747467
1987.0000000;0.3217690
1988.0000000;0.2000099
1989.0000000;-1.6930391
1990.0000000;-1.4708207
1991.0000000;-0.5791457
1992.0000000;-0.7715528
1993.0000000;-0.4900593
1994.0000000;-0.3421206
1995.0000000;1.0283794
1996.0000000;-0.2990839
1997.0000000;-0.7482110
1998.0000000;-1.4683051
1999.0000000;-0.8521768
2000.0000000;-1.2454071
2001.0000000;0.0636430
2002.0000000;-2.1134808
2003.0000000;-3.7716422
2004.0000000;-1.8818934
2005.0000000;-2.4103875
2006.0000000;-1.9415941
2007.0000000;-1.2261770
2008.0000000;-1.8085343
2009.0000000;-3.1412802
2010.0000000;-0.4439911
2011.0000000;-2.4250636
2012.0000000;-2.1789529
2013.0000000;-0.4133925
2014.0000000;-0.3812437
2015.0000000;-1.9865776