1967.0000000;-0.9447403
1968.0000000;0.3285122
1969.0000000;-0.1339096
1970.0000000;-0.7159682
1971.0000000;-0.5771418
1972.0000000;0.0082987
1973.0000000;-1.1390573
1974.0000000;-0.8969829
1975.0000000;0.1719307
1976.0000000;-0.8575976
1977.0000000;0.5213273
1978.0000000;0.5021652
1979.0000000;-0.3918855
1980.0000000;0.1310041
1981.0000000;-0.3118494
1982.0000000;-0.2205766
1983.0000000;-0.2531700
1984.0000000;0.4408624
1985.0000000;-0.4673168
1986.0000000;-1.2462516
1987.0000000;-0.4110970
1988.0000000;0.0121013
1989.0000000;-1.5265856
1990.0000000;-0.8895319
1991.0000000;-0.7001913
1992.0000000;-0.7538071
1993.0000000;-0.5230685
1994.0000000;-0.2868764
1995.0000000;0.4072638
1996.0000000;-0.0330304
1997.0000000;-0.2950105
1998.0000000;-1.4595973
1999.0000000;-0.4666858
2000.0000000;-0.8992272
2001.0000000;0.8409043
2002.0000000;-0.3023672
2003.0000000;-2.4997585
2004.0000000;-2.0248327
2005.0000000;-2.1532881
2006.0000000;-1.8213136
2007.0000000;-1.1978641
2008.0000000;-0.8724627
2009.0000000;-2.2957711
2010.0000000;-0.7463322
2011.0000000;-2.4044030
2012.0000000;-2.0107501
2013.0000000;-0.6704322
2014.0000000;-0.9381981
2015.0000000;-2.3487370