1967.0000000;-1.3827635
1968.0000000;0.6760005
1969.0000000;-0.2822484
1970.0000000;-0.7727897
1971.0000000;-0.4325855
1972.0000000;0.1115505
1973.0000000;-1.1186566
1974.0000000;-0.8651493
1975.0000000;-0.3311952
1976.0000000;-0.9464140
1977.0000000;0.5564625
1978.0000000;0.1900790
1979.0000000;-0.4068202
1980.0000000;-0.3760451
1981.0000000;-0.9763895
1982.0000000;-0.8979691
1983.0000000;-0.2074241
1984.0000000;0.4501638
1985.0000000;-0.7303993
1986.0000000;-1.2577192
1987.0000000;-0.3594995
1988.0000000;-0.4278345
1989.0000000;-1.5214697
1990.0000000;-0.5297976
1991.0000000;-1.0848706
1992.0000000;-0.7073479
1993.0000000;-0.8057749
1994.0000000;-0.5152860
1995.0000000;0.3204615
1996.0000000;-0.0433493
1997.0000000;-0.3574021
1998.0000000;-1.5412859
1999.0000000;-0.8773192
2000.0000000;-1.1381979
2001.0000000;0.3994229
2002.0000000;-0.2649624
2003.0000000;-1.9836088
2004.0000000;-1.8955400
2005.0000000;-2.0599823
2006.0000000;-1.4331875
2007.0000000;-1.2061472
2008.0000000;-0.5674073
2009.0000000;-1.4534733
2010.0000000;-0.6669120
2011.0000000;-1.8467259
2012.0000000;-1.6029522
2013.0000000;-0.6219688
2014.0000000;-0.7987340
2015.0000000;-1.0267034