1967.0000000;-0.3804388
1968.0000000;-0.9591031
1969.0000000;-1.1019323
1970.0000000;-0.7360708
1971.0000000;-1.8211855
1972.0000000;-0.6694214
1973.0000000;-1.3093560
1974.0000000;-1.0338473
1975.0000000;-0.3980828
1976.0000000;-1.5208635
1977.0000000;0.1661206
1978.0000000;0.8162205
1979.0000000;-0.0225018
1980.0000000;0.7425733
1981.0000000;0.4049316
1982.0000000;0.0578639
1983.0000000;-0.0773832
1984.0000000;0.5765578
1985.0000000;-0.6422211
1986.0000000;-1.8340909
1987.0000000;0.1902390
1988.0000000;0.1461018
1989.0000000;-1.9010885
1990.0000000;-1.7580059
1991.0000000;-0.7888221
1992.0000000;-1.0284376
1993.0000000;-0.6032476
1994.0000000;-0.4739185
1995.0000000;1.0331037
1996.0000000;-0.2435387
1997.0000000;-0.7839836
1998.0000000;-1.4332709
1999.0000000;-0.8505468
2000.0000000;-1.0059359
2001.0000000;0.3653192
2002.0000000;-1.5753618
2003.0000000;-3.6215143
2004.0000000;-2.0758290
2005.0000000;-2.4455490
2006.0000000;-2.0051618
2007.0000000;-1.0900242
2008.0000000;-1.6126521
2009.0000000;-3.1233597
2010.0000000;-0.3823951
2011.0000000;-2.1197228
2012.0000000;-2.1947587
2013.0000000;-0.2229214
2014.0000000;-0.3682327
2015.0000000;-2.0049427