1967.0000000;-0.9144194
1968.0000000;0.1876350
1969.0000000;-0.4125116
1970.0000000;-0.8718805
1971.0000000;-0.8806028
1972.0000000;-0.0985654
1973.0000000;-1.6093521
1974.0000000;-0.9868233
1975.0000000;-0.0032616
1976.0000000;-1.1457524
1977.0000000;0.6032630
1978.0000000;0.5163168
1979.0000000;-0.2711047
1980.0000000;0.2734171
1981.0000000;-0.1315622
1982.0000000;-0.2093449
1983.0000000;-0.3435932
1984.0000000;0.2732865
1985.0000000;-0.6308342
1986.0000000;-1.3264148
1987.0000000;-0.4803271
1988.0000000;-0.0256746
1989.0000000;-1.5894990
1990.0000000;-1.2353721
1991.0000000;-0.7414118
1992.0000000;-0.8845835
1993.0000000;-0.5817747
1994.0000000;-0.2761950
1995.0000000;0.3214420
1996.0000000;-0.1919440
1997.0000000;-0.5501481
1998.0000000;-1.5819385
1999.0000000;-0.6797912
2000.0000000;-0.8780092
2001.0000000;0.9416891
2002.0000000;-0.7209929
2003.0000000;-2.6527362
2004.0000000;-1.8834647
2005.0000000;-2.1149416
2006.0000000;-1.9330609
2007.0000000;-1.4310963
2008.0000000;-1.0117158
2009.0000000;-2.3947892
2010.0000000;-0.7467071
2011.0000000;-2.4887948
2012.0000000;-2.1323354
2013.0000000;-0.6856217
2014.0000000;-1.1002126
2015.0000000;-2.5383973