1967.0000000;-0.3099042
1968.0000000;-0.5581224
1969.0000000;-1.0478286
1970.0000000;-0.6659220
1971.0000000;-1.6553041
1972.0000000;-0.8121057
1973.0000000;-1.1439428
1974.0000000;-0.8294156
1975.0000000;-0.5221753
1976.0000000;-1.5157707
1977.0000000;0.3281161
1978.0000000;0.4569785
1979.0000000;0.1154769
1980.0000000;0.8485711
1981.0000000;0.2778239
1982.0000000;-0.0435773
1983.0000000;-0.0615377
1984.0000000;0.9109674
1985.0000000;0.4837957
1986.0000000;-1.4978540
1987.0000000;0.2132278
1988.0000000;0.2937267
1989.0000000;-1.1199011
1990.0000000;-1.5131680
1991.0000000;-1.2021476
1992.0000000;-0.9563830
1993.0000000;-0.5140812
1994.0000000;-0.6238091
1995.0000000;1.0922714
1996.0000000;-0.2655687
1997.0000000;-0.8077679
1998.0000000;-1.6589370
1999.0000000;-0.6037697
2000.0000000;-1.1518358
2001.0000000;0.5354815
2002.0000000;-1.2351522
2003.0000000;-2.9776447
2004.0000000;-1.5211371
2005.0000000;-2.1936750
2006.0000000;-1.0743639
2007.0000000;-0.9316974
2008.0000000;-1.5562005
2009.0000000;-3.0420644
2010.0000000;-0.5511491
2011.0000000;-2.9959493
2012.0000000;-2.5582550
2013.0000000;-0.9373851
2014.0000000;-0.9669982
2015.0000000;-2.4610085