1967.0000000;-0.5106232
1968.0000000;-0.1180644
1969.0000000;-0.7920338
1970.0000000;-0.8532110
1971.0000000;-1.8386778
1972.0000000;-0.6470701
1973.0000000;-1.2033679
1974.0000000;-1.0104474
1975.0000000;-0.5877426
1976.0000000;-1.5744759
1977.0000000;0.3801696
1978.0000000;0.5586693
1979.0000000;0.0552118
1980.0000000;0.6484187
1981.0000000;0.4161610
1982.0000000;0.2448702
1983.0000000;-0.2189226
1984.0000000;0.6926162
1985.0000000;-0.3557447
1986.0000000;-1.3568929
1987.0000000;-0.1047782
1988.0000000;0.1336994
1989.0000000;-1.5284796
1990.0000000;-1.7185805
1991.0000000;-1.4780281
1992.0000000;-1.7668407
1993.0000000;-0.7332692
1994.0000000;-0.9671937
1995.0000000;0.6036642
1996.0000000;-0.5805683
1997.0000000;-1.0454338
1998.0000000;-1.9170843
1999.0000000;-1.0480106
2000.0000000;-1.4609836
2001.0000000;0.2879444
2002.0000000;-1.8047560
2003.0000000;-3.1619582
2004.0000000;-2.1394475
2005.0000000;-2.4278007
2006.0000000;-1.5082781
2007.0000000;-1.4510403
2008.0000000;-1.6814016
2009.0000000;-2.6311188
2010.0000000;-1.1479100
2011.0000000;-2.5335889
2012.0000000;-2.5594716
2013.0000000;-0.7949481
2014.0000000;-1.4630575
2015.0000000;-2.5567632