1967.0000000;-0.5091602
1968.0000000;-0.0970637
1969.0000000;-0.5749182
1970.0000000;-0.5484248
1971.0000000;-1.3882276
1972.0000000;-0.5805776
1973.0000000;-1.0008385
1974.0000000;-0.8803264
1975.0000000;-0.5498605
1976.0000000;-1.3368478
1977.0000000;0.1245889
1978.0000000;0.4488444
1979.0000000;-0.1440108
1980.0000000;0.5407945
1981.0000000;0.3546550
1982.0000000;0.0652290
1983.0000000;-0.2172834
1984.0000000;0.9514279
1985.0000000;0.5151790
1986.0000000;-1.1794788
1987.0000000;-0.0378053
1988.0000000;0.0258561
1989.0000000;-1.3882673
1990.0000000;-1.7334814
1991.0000000;-1.0988747
1992.0000000;-1.7756188
1993.0000000;-0.6193306
1994.0000000;-0.4508379
1995.0000000;0.6604753
1996.0000000;-0.1712477
1997.0000000;-0.8611052
1998.0000000;-1.5714211
1999.0000000;-0.6947681
2000.0000000;-0.7482958
2001.0000000;0.7609893
2002.0000000;-0.6871102
2003.0000000;-2.1849833
2004.0000000;-1.6999171
2005.0000000;-1.8740723
2006.0000000;-1.0275954
2007.0000000;-0.7901828
2008.0000000;-1.3010279
2009.0000000;-1.9838564
2010.0000000;-0.8230786
2011.0000000;-2.1581368
2012.0000000;-2.0550828
2013.0000000;-0.8483508
2014.0000000;-1.2551874
2015.0000000;-2.2058926