1967.0000000;-0.8174576
1968.0000000;0.6557479
1969.0000000;-0.7849543
1970.0000000;-0.5538046
1971.0000000;-1.2844136
1972.0000000;-0.5338314
1973.0000000;-0.6596129
1974.0000000;-0.9047079
1975.0000000;-0.9046269
1976.0000000;-1.3554780
1977.0000000;0.0730921
1978.0000000;0.2408068
1979.0000000;-0.1032161
1980.0000000;0.2296434
1981.0000000;0.0791333
1982.0000000;0.1955404
1983.0000000;-0.1842870
1984.0000000;1.3581829
1985.0000000;0.7526081
1986.0000000;-1.1189307
1987.0000000;0.1669996
1988.0000000;0.0301052
1989.0000000;-1.2623122
1990.0000000;-1.8535211
1991.0000000;-1.6691920
1992.0000000;-1.6971378
1993.0000000;-0.8546953
1994.0000000;-0.7853310
1995.0000000;0.6463118
1996.0000000;-0.2276037
1997.0000000;-0.8676167
1998.0000000;-1.8372674
1999.0000000;-0.6747199
2000.0000000;-0.9729289
2001.0000000;0.9189060
2002.0000000;-0.4201337
2003.0000000;-2.1342533
2004.0000000;-1.9654506
2005.0000000;-2.0155172
2006.0000000;-1.2025921
2007.0000000;-1.1050749
2008.0000000;-1.5996995
2009.0000000;-2.0039611
2010.0000000;-1.1770480
2011.0000000;-2.0822811
2012.0000000;-2.3208597
2013.0000000;-1.1872089
2014.0000000;-1.4542603
2015.0000000;-2.1971002