1967.0000000;-0.4819813
1968.0000000;1.3003654
1969.0000000;-1.0675364
1970.0000000;-0.2270200
1971.0000000;-0.8698692
1972.0000000;-0.8191273
1973.0000000;-0.3850324
1974.0000000;-0.6836369
1975.0000000;-0.7471721
1976.0000000;-1.5168748
1977.0000000;0.2703797
1978.0000000;0.0415571
1979.0000000;0.2257115
1980.0000000;0.2925266
1981.0000000;-0.2706003
1982.0000000;-0.2136899
1983.0000000;-0.0692855
1984.0000000;2.0894268
1985.0000000;1.3515747
1986.0000000;-1.2736478
1987.0000000;0.5902537
1988.0000000;-0.2817596
1989.0000000;-1.1185774
1990.0000000;-1.0938548
1991.0000000;-1.6422296
1992.0000000;-1.2797382
1993.0000000;-0.5809712
1994.0000000;-0.0721647
1995.0000000;0.9427185
1996.0000000;0.2663216
1997.0000000;-0.5413117
1998.0000000;-1.8287075
1999.0000000;-0.2687188
2000.0000000;-0.8218040
2001.0000000;0.8713650
2002.0000000;-0.0216902
2003.0000000;-2.1823869
2004.0000000;-2.0267065
2005.0000000;-1.8330920
2006.0000000;-1.2007408
2007.0000000;-0.3942636
2008.0000000;-1.4766190
2009.0000000;-2.2613242
2010.0000000;-0.8563785
2011.0000000;-2.0170588
2012.0000000;-2.2380924
2013.0000000;-1.1222334
2014.0000000;-0.6229802
2015.0000000;-1.3507786