1967.0000000;-0.8763917
1968.0000000;-0.2343680
1969.0000000;-0.9230863
1970.0000000;-0.9458998
1971.0000000;-1.2388307
1972.0000000;-0.3682246
1973.0000000;-1.5924168
1974.0000000;-1.0678265
1975.0000000;-0.6260291
1976.0000000;-1.3288741
1977.0000000;0.0733218
1978.0000000;0.1807135
1979.0000000;-0.6445143
1980.0000000;-0.0148218
1981.0000000;-0.3058909
1982.0000000;-0.6623701
1983.0000000;-0.2306999
1984.0000000;0.2532026
1985.0000000;-0.3970439
1986.0000000;-1.4228867
1987.0000000;-0.5315762
1988.0000000;-0.3253567
1989.0000000;-1.3894153
1990.0000000;-1.1801639
1991.0000000;-0.9266829
1992.0000000;-0.8378657
1993.0000000;-0.6301662
1994.0000000;-0.8084384
1995.0000000;0.2679946
1996.0000000;-0.5534422
1997.0000000;-1.4994540
1998.0000000;-1.7645032
1999.0000000;-0.9929550
2000.0000000;-1.5290897
2001.0000000;-0.2621202
2002.0000000;-1.6388301
2003.0000000;-3.1494126
2004.0000000;-1.9410484
2005.0000000;-2.2892134
2006.0000000;-2.2736602
2007.0000000;-1.9984521
2008.0000000;-1.8168981
2009.0000000;-2.6686282
2010.0000000;-0.9431113
2011.0000000;-2.7644897
2012.0000000;-2.4382975
2013.0000000;-1.0443453
2014.0000000;-1.5099852
2015.0000000;-2.9222741