1967.0000000;-1.6749326
1968.0000000;0.1658071
1969.0000000;-1.2256138
1970.0000000;-0.6537737
1971.0000000;-1.6314975
1972.0000000;-0.7561122
1973.0000000;-0.9483231
1974.0000000;-0.9360543
1975.0000000;-0.9540159
1976.0000000;-1.5029993
1977.0000000;-0.1261530
1978.0000000;0.2207244
1979.0000000;-0.2537074
1980.0000000;-0.1517953
1981.0000000;-0.2667887
1982.0000000;0.0160734
1983.0000000;-0.1417070
1984.0000000;1.3103691
1985.0000000;0.9707636
1986.0000000;-1.3335447
1987.0000000;-0.1412413
1988.0000000;0.2543838
1989.0000000;-1.5140890
1990.0000000;-1.7800864
1991.0000000;-1.9466877
1992.0000000;-1.5770364
1993.0000000;-0.7740093
1994.0000000;-0.4991411
1995.0000000;0.7061782
1996.0000000;-0.3651110
1997.0000000;-0.8159348
1998.0000000;-1.8864849
1999.0000000;-0.7071723
2000.0000000;-1.0537332
2001.0000000;0.7545024
2002.0000000;-0.6592922
2003.0000000;-2.4040565
2004.0000000;-2.1093054
2005.0000000;-2.2383275
2006.0000000;-1.6025732
2007.0000000;-1.0171403
2008.0000000;-1.7586629
2009.0000000;-2.2143073
2010.0000000;-1.3962116
2011.0000000;-2.2490656
2012.0000000;-2.4464264
2013.0000000;-0.9712009
2014.0000000;-1.0375208
2015.0000000;-1.9912478