1967.0000000;-0.0382503
1968.0000000;-0.1242127
1969.0000000;-1.0147866
1970.0000000;-0.6019286
1971.0000000;-1.1243161
1972.0000000;-0.5073949
1973.0000000;-0.8822865
1974.0000000;-0.6096123
1975.0000000;-0.1379894
1976.0000000;-1.4347138
1977.0000000;0.3994519
1978.0000000;0.5510789
1979.0000000;0.3367316
1980.0000000;0.9316366
1981.0000000;0.3176034
1982.0000000;0.1078943
1983.0000000;-0.1219291
1984.0000000;0.4078316
1985.0000000;0.1981438
1986.0000000;-1.3131764
1987.0000000;0.2805206
1988.0000000;0.2244471
1989.0000000;-1.4545932
1990.0000000;-1.4735262
1991.0000000;-0.9711646
1992.0000000;-0.7981005
1993.0000000;-0.5617131
1994.0000000;-0.7792873
1995.0000000;0.8732743
1996.0000000;-0.6326458
1997.0000000;-0.9449136
1998.0000000;-1.3993891
1999.0000000;-0.8290428
2000.0000000;-1.3373091
2001.0000000;0.0014832
2002.0000000;-1.0717814
2003.0000000;-2.9905624
2004.0000000;-0.6952356
2005.0000000;-2.2001638
2006.0000000;-0.8447791
2007.0000000;-1.0178210
2008.0000000;-1.5976725
2009.0000000;-3.2092738
2010.0000000;-0.6680832
2011.0000000;-3.1852534
2012.0000000;-2.4344697
2013.0000000;-1.0740037
2014.0000000;-1.2479870
2015.0000000;-2.8106468