1967.0000000;-0.6969945
1968.0000000;-0.1853790
1969.0000000;-0.7075862
1970.0000000;-0.6196154
1971.0000000;-1.3896575
1972.0000000;-0.6184819
1973.0000000;-1.2431974
1974.0000000;-1.0365607
1975.0000000;-0.5389898
1976.0000000;-1.3852355
1977.0000000;0.1577883
1978.0000000;0.3931583
1979.0000000;-0.0352746
1980.0000000;0.4078079
1981.0000000;0.3154019
1982.0000000;0.0077581
1983.0000000;-0.1129117
1984.0000000;1.1933209
1985.0000000;0.9354945
1986.0000000;-1.1400223
1987.0000000;0.4771649
1988.0000000;0.3133711
1989.0000000;-1.3305488
1990.0000000;-1.9014292
1991.0000000;-1.2842712
1992.0000000;-1.9329863
1993.0000000;-0.6686769
1994.0000000;-0.5538894
1995.0000000;0.7732743
1996.0000000;-0.3997738
1997.0000000;-0.9743525
1998.0000000;-1.7757375
1999.0000000;-0.7486140
2000.0000000;-1.1090181
2001.0000000;0.9769446
2002.0000000;-0.9250598
2003.0000000;-2.5569687
2004.0000000;-1.9525084
2005.0000000;-2.0912418
2006.0000000;-1.1833992
2007.0000000;-1.2066782
2008.0000000;-1.5144573
2009.0000000;-2.2155821
2010.0000000;-1.2438858
2011.0000000;-2.4517612
2012.0000000;-2.3794570
2013.0000000;-1.0704963
2014.0000000;-1.5967790
2015.0000000;-2.4814835