1967.0000000;-0.9381577
1968.0000000;0.1997928
1969.0000000;-0.3997852
1970.0000000;-0.8247678
1971.0000000;-0.9796487
1972.0000000;-0.1156222
1973.0000000;-1.4964221
1974.0000000;-0.9953571
1975.0000000;-0.0633070
1976.0000000;-1.1771724
1977.0000000;0.4981056
1978.0000000;0.4591737
1979.0000000;-0.4052781
1980.0000000;0.2349995
1981.0000000;-0.1550270
1982.0000000;-0.2758645
1983.0000000;-0.4020337
1984.0000000;0.3078920
1985.0000000;-0.4806188
1986.0000000;-1.2717564
1987.0000000;-0.4904067
1988.0000000;-0.0813149
1989.0000000;-1.5092952
1990.0000000;-1.1864240
1991.0000000;-0.8083954
1992.0000000;-0.8268693
1993.0000000;-0.5872937
1994.0000000;-0.3653830
1995.0000000;0.2988895
1996.0000000;-0.1639804
1997.0000000;-0.6129526
1998.0000000;-1.5475795
1999.0000000;-0.6733556
2000.0000000;-0.8682948
2001.0000000;0.7935641
2002.0000000;-0.6122217
2003.0000000;-2.5447891
2004.0000000;-1.9036714
2005.0000000;-2.0252023
2006.0000000;-1.7953851
2007.0000000;-1.1438054
2008.0000000;-0.8058493
2009.0000000;-2.1132956
2010.0000000;-0.6610271
2011.0000000;-2.1494203
2012.0000000;-1.7526600
2013.0000000;-0.4793317
2014.0000000;-0.8273432
2015.0000000;-1.9638535