1967.0000000;-0.5122890
1968.0000000;0.2687055
1969.0000000;0.0114720
1970.0000000;-0.0449251
1971.0000000;-0.5246719
1972.0000000;-0.0152107
1973.0000000;-0.3122591
1974.0000000;-0.5430097
1975.0000000;0.1218841
1976.0000000;-0.6122457
1977.0000000;0.2696570
1978.0000000;0.3317911
1979.0000000;-0.1633055
1980.0000000;0.2137631
1981.0000000;-0.2314602
1982.0000000;-0.1812532
1983.0000000;-0.1950195
1984.0000000;0.6378039
1985.0000000;0.1592058
1986.0000000;-1.2656375
1987.0000000;-0.2962514
1988.0000000;-0.1074039
1989.0000000;-0.9881238
1990.0000000;-0.7376277
1991.0000000;-0.6822857
1992.0000000;-0.9851885
1993.0000000;-0.5138759
1994.0000000;-0.3282339
1995.0000000;0.5366985
1996.0000000;0.1062127
1997.0000000;-0.3824663
1998.0000000;-1.3392768
1999.0000000;-0.4567853
2000.0000000;-0.9496924
2001.0000000;0.5980401
2002.0000000;-0.3062404
2003.0000000;-2.2199607
2004.0000000;-1.8554462
2005.0000000;-1.9402144
2006.0000000;-1.3069128
2007.0000000;-0.3363667
2008.0000000;-0.7628996
2009.0000000;-1.9539303
2010.0000000;-0.2330254
2011.0000000;-1.9491029
2012.0000000;-1.8683765
2013.0000000;-0.4776559
2014.0000000;-0.5611855
2015.0000000;-1.9178672