1967.0000000;-1.3368651
1968.0000000;0.8829330
1969.0000000;-0.3718410
1970.0000000;-0.6076252
1971.0000000;-1.0160354
1972.0000000;0.1609991
1973.0000000;-0.9834337
1974.0000000;-0.9269389
1975.0000000;-0.0117443
1976.0000000;-1.1963520
1977.0000000;0.5038453
1978.0000000;0.3100446
1979.0000000;-0.8526034
1980.0000000;-0.2860376
1981.0000000;-0.3513691
1982.0000000;-0.7355382
1983.0000000;-0.2328522
1984.0000000;0.8571059
1985.0000000;-0.4548820
1986.0000000;-1.3290691
1987.0000000;-0.3294464
1988.0000000;-0.2299515
1989.0000000;-1.6242199
1990.0000000;-0.6856532
1991.0000000;-1.1259041
1992.0000000;-0.9411950
1993.0000000;-0.5001256
1994.0000000;-0.2028663
1995.0000000;0.3789887
1996.0000000;-0.1388733
1997.0000000;-0.1633070
1998.0000000;-1.5480728
1999.0000000;-0.4483393
2000.0000000;-0.8864551
2001.0000000;0.6296365
2002.0000000;-0.0982285
2003.0000000;-2.3166530
2004.0000000;-2.1344728
2005.0000000;-2.2262702
2006.0000000;-1.7152488
2007.0000000;-1.2011712
2008.0000000;-1.0957090
2009.0000000;-1.9583738
2010.0000000;-0.8443625
2011.0000000;-2.1414318
2012.0000000;-1.9293021
2013.0000000;-0.5700942
2014.0000000;-0.8430099
2015.0000000;-1.7118697