1967.0000000;-0.3397075
1968.0000000;-0.8990851
1969.0000000;-1.0286350
1970.0000000;-0.6858414
1971.0000000;-1.6842546
1972.0000000;-0.6350579
1973.0000000;-1.1995459
1974.0000000;-0.9603442
1975.0000000;-0.3800605
1976.0000000;-1.4412427
1977.0000000;0.1466643
1978.0000000;0.8072553
1979.0000000;-0.0076270
1980.0000000;0.7139320
1981.0000000;0.4014258
1982.0000000;0.0448358
1983.0000000;-0.0523090
1984.0000000;0.5825217
1985.0000000;-0.5330166
1986.0000000;-1.7589734
1987.0000000;0.2148480
1988.0000000;0.1904304
1989.0000000;-1.8065058
1990.0000000;-1.6951796
1991.0000000;-0.7341471
1992.0000000;-0.9704181
1993.0000000;-0.5778614
1994.0000000;-0.3969778
1995.0000000;1.0398018
1996.0000000;-0.1794189
1997.0000000;-0.7260396
1998.0000000;-1.3048294
1999.0000000;-0.7650263
2000.0000000;-0.8406438
2001.0000000;0.4058988
2002.0000000;-1.3353916
2003.0000000;-3.4588945
2004.0000000;-1.9532925
2005.0000000;-2.3621011
2006.0000000;-1.9278325
2007.0000000;-1.1533496
2008.0000000;-1.6538947
2009.0000000;-3.1391644
2010.0000000;-0.5108751
2011.0000000;-2.6241047
2012.0000000;-2.4090457
2013.0000000;-0.5553839
2014.0000000;-0.6981690
2015.0000000;-2.2992768