1967.0000000;-0.9729427
1968.0000000;0.5454733
1969.0000000;-0.4403794
1970.0000000;-0.6486580
1971.0000000;-0.4064864
1972.0000000;0.0620054
1973.0000000;-1.1071097
1974.0000000;-1.0367849
1975.0000000;0.2892481
1976.0000000;-1.1793072
1977.0000000;0.8342522
1978.0000000;0.7249327
1979.0000000;-0.2363070
1980.0000000;0.3538122
1981.0000000;0.0850953
1982.0000000;-0.3429956
1983.0000000;-0.1800855
1984.0000000;0.5403084
1985.0000000;-0.4753512
1986.0000000;-1.3236748
1987.0000000;-0.3289828
1988.0000000;0.2077809
1989.0000000;-1.5894637
1990.0000000;-1.4121076
1991.0000000;-0.7192181
1992.0000000;-0.7932801
1993.0000000;-0.2891294
1994.0000000;0.0285733
1995.0000000;0.3647316
1996.0000000;-0.1571466
1997.0000000;-0.2145042
1998.0000000;-1.6448417
1999.0000000;-0.4962810
2000.0000000;-0.6977706
2001.0000000;1.2812278
2002.0000000;-0.3493263
2003.0000000;-2.4766026
2004.0000000;-1.9251788
2005.0000000;-2.2299120
2006.0000000;-1.8268268
2007.0000000;-1.1259005
2008.0000000;-0.8503710
2009.0000000;-1.8752754
2010.0000000;-0.6833667
2011.0000000;-1.9482048
2012.0000000;-1.8032303
2013.0000000;-0.2932015
2014.0000000;-0.4320785
2015.0000000;-1.4344113