1967.0000000;-1.3602884
1968.0000000;-0.1428662
1969.0000000;-0.3619665
1970.0000000;-1.0882083
1971.0000000;-1.2262776
1972.0000000;-0.1491205
1973.0000000;-0.9876715
1974.0000000;-1.1644763
1975.0000000;-0.3315568
1976.0000000;-0.4943901
1977.0000000;0.5179965
1978.0000000;0.3943775
1979.0000000;-0.9974477
1980.0000000;-0.0466928
1981.0000000;-0.2135478
1982.0000000;-0.9410436
1983.0000000;-0.7941283
1984.0000000;0.5897897
1985.0000000;-0.1351479
1986.0000000;-1.3499354
1987.0000000;-0.9620531
1988.0000000;-1.0144736
1989.0000000;-1.5742854
1990.0000000;-1.5993636
1991.0000000;-1.7790393
1992.0000000;-1.7105222
1993.0000000;-0.7456277
1994.0000000;-0.6930670
1995.0000000;0.1839270
1996.0000000;-0.7761006
1997.0000000;-1.0265284
1998.0000000;-1.9253345
1999.0000000;-0.9465138
2000.0000000;-1.0298533
2001.0000000;0.6376433
2002.0000000;0.0900923
2003.0000000;-2.1553230
2004.0000000;-1.8648870
2005.0000000;-1.7847335
2006.0000000;-1.4985986
2007.0000000;-1.3002319
2008.0000000;-1.0190625
2009.0000000;-1.6222874
2010.0000000;-0.8788898
2011.0000000;-1.7314487
2012.0000000;-1.8395108
2013.0000000;-1.0911146
2014.0000000;-1.1197772
2015.0000000;-1.2574794