1967.0000000;-0.9317665
1968.0000000;-0.2450588
1969.0000000;-0.9510791
1970.0000000;-0.5104807
1971.0000000;-1.6874495
1972.0000000;-0.6331279
1973.0000000;-1.3470402
1974.0000000;-0.8220444
1975.0000000;-0.1397726
1976.0000000;-1.5173526
1977.0000000;0.3245241
1978.0000000;0.6408484
1979.0000000;-0.0320158
1980.0000000;0.6254202
1981.0000000;0.3566060
1982.0000000;0.3210412
1983.0000000;-0.0362020
1984.0000000;1.0357460
1985.0000000;0.4508205
1986.0000000;-1.2546616
1987.0000000;0.2842900
1988.0000000;0.2310107
1989.0000000;-1.5028116
1990.0000000;-1.5174428
1991.0000000;-1.4775264
1992.0000000;-1.5660207
1993.0000000;-0.5856769
1994.0000000;-0.2188568
1995.0000000;1.0197024
1996.0000000;-0.3632435
1997.0000000;-0.8346766
1998.0000000;-1.8124797
1999.0000000;-0.6471754
2000.0000000;-0.8780710
2001.0000000;0.7553699
2002.0000000;-1.4537157
2003.0000000;-2.7735329
2004.0000000;-1.9947906
2005.0000000;-2.4219654
2006.0000000;-1.6861708
2007.0000000;-1.2597054
2008.0000000;-1.3386815
2009.0000000;-2.5393770
2010.0000000;-1.0769304
2011.0000000;-2.3301420
2012.0000000;-2.0533481
2013.0000000;-0.4232538
2014.0000000;-0.8385802
2015.0000000;-1.9535716