1967.0000000;-1.4629612
1968.0000000;-0.4537387
1969.0000000;-0.8748167
1970.0000000;-1.4746964
1971.0000000;-0.8351833
1972.0000000;-0.4353705
1973.0000000;-1.7694018
1974.0000000;-0.9690304
1975.0000000;-0.9951961
1976.0000000;-1.2755958
1977.0000000;0.7694116
1978.0000000;0.4663213
1979.0000000;0.1742588
1980.0000000;-0.0026766
1981.0000000;-0.5325298
1982.0000000;-0.3304080
1983.0000000;-0.1302611
1984.0000000;0.0477133
1985.0000000;-0.5289310
1986.0000000;-1.4150481
1987.0000000;-1.1461283
1988.0000000;-0.5362407
1989.0000000;-1.6801203
1990.0000000;-1.2385384
1991.0000000;-0.7496433
1992.0000000;-0.8242535
1993.0000000;-0.7023160
1994.0000000;-0.5675462
1995.0000000;-0.2436655
1996.0000000;0.0933692
1997.0000000;-0.3635283
1998.0000000;-1.7394791
1999.0000000;-1.6678627
2000.0000000;-1.5007696
2001.0000000;0.9174379
2002.0000000;-1.3528881
2003.0000000;-3.0003841
2004.0000000;-1.4043198
2005.0000000;-2.3296421
2006.0000000;-1.7433660
2007.0000000;-1.6498539
2008.0000000;-0.9962051
2009.0000000;-1.7454025
2010.0000000;-0.1265435
2011.0000000;-1.7233397
2012.0000000;-1.5580959
2013.0000000;-0.2282336
2014.0000000;-0.1731080
2015.0000000;-0.7894541