1967.0000000;-0.9705435
1968.0000000;-0.2879090
1969.0000000;-0.7329626
1970.0000000;-0.4994214
1971.0000000;-1.4758148
1972.0000000;-0.6110893
1973.0000000;-1.0270879
1974.0000000;-0.8358635
1975.0000000;-0.4614940
1976.0000000;-1.4447060
1977.0000000;-0.2066081
1978.0000000;0.3990328
1979.0000000;-0.2717353
1980.0000000;0.3037764
1981.0000000;0.1307280
1982.0000000;0.0018650
1983.0000000;-0.3186616
1984.0000000;0.9937470
1985.0000000;0.3744223
1986.0000000;-1.3141773
1987.0000000;-0.2353003
1988.0000000;0.0584684
1989.0000000;-1.4183540
1990.0000000;-1.4674584
1991.0000000;-1.5810528
1992.0000000;-1.5054357
1993.0000000;-0.6151641
1994.0000000;-0.3743322
1995.0000000;0.7453901
1996.0000000;-0.1208219
1997.0000000;-0.7901714
1998.0000000;-1.6181831
1999.0000000;-0.7215596
2000.0000000;-0.8332629
2001.0000000;0.5402251
2002.0000000;-0.5856376
2003.0000000;-2.3245296
2004.0000000;-1.7954040
2005.0000000;-1.9235759
2006.0000000;-1.4428418
2007.0000000;-0.9478609
2008.0000000;-1.3651611
2009.0000000;-2.1795607
2010.0000000;-0.7057594
2011.0000000;-2.0396214
2012.0000000;-2.0770805
2013.0000000;-0.6823257
2014.0000000;-0.9225079
2015.0000000;-1.9007757