1967.0000000;-0.6556332
1968.0000000;-0.0276064
1969.0000000;-0.6250621
1970.0000000;-0.6551018
1971.0000000;-1.3587269
1972.0000000;-0.5809467
1973.0000000;-1.0201063
1974.0000000;-0.9951225
1975.0000000;-0.6160229
1976.0000000;-1.3017688
1977.0000000;0.2058824
1978.0000000;0.3263626
1979.0000000;-0.2249682
1980.0000000;0.3598110
1981.0000000;0.2849649
1982.0000000;-0.0194830
1983.0000000;-0.2911874
1984.0000000;0.9387318
1985.0000000;0.4056550
1986.0000000;-1.1536179
1987.0000000;-0.1575656
1988.0000000;0.1404106
1989.0000000;-1.4184573
1990.0000000;-1.6674607
1991.0000000;-1.2232074
1992.0000000;-1.7044041
1993.0000000;-0.6712775
1994.0000000;-0.5341793
1995.0000000;0.6126346
1996.0000000;-0.2018190
1997.0000000;-0.8779130
1998.0000000;-1.6203439
1999.0000000;-0.8173763
2000.0000000;-1.0345752
2001.0000000;0.8042048
2002.0000000;-0.7100384
2003.0000000;-2.3379378
2004.0000000;-1.8523700
2005.0000000;-1.9076893
2006.0000000;-1.1196768
2007.0000000;-0.9738058
2008.0000000;-1.3630337
2009.0000000;-2.0163114
2010.0000000;-0.9984444
2011.0000000;-2.1384363
2012.0000000;-2.1179159
2013.0000000;-0.9123050
2014.0000000;-1.3144248
2015.0000000;-2.1754284