Year,Value,NumPoints 1980,-0.0428716,245 1981,1.47288,245 1982,-0.0656672,245 1983,1.72836,245 1984,1.76119,245 1985,-0.974577,245 1986,1.60073,245 1987,1.60015,245 1988,-0.334482,245 1989,-1.88083,245 1990,1.49466,245 1991,2.68532,245 1992,2.84294,245 1993,-0.646903,245 1994,-0.353595,245 1995,1.36852,245 1996,0.578146,245 1997,0.838241,245 1998,2.28241,245 1999,2.63576,245 2000,2.73974,245 2001,-0.152842,245 2002,0.732936,245 2003,-1.03064,245 2004,-0.459386,245 2005,1.61582,245 2006,0.0738575,245 2007,-1.14653,245 2008,-0.162866,245 2009,0.891878,245 2010,-1.97727,245 2011,-1.13138,245 2012,1.41532,245 2013,-0.0573254,245 2014,-1.27291,245 2015,-1.1097,245 2016,2.16139,245 2017,3.58159,245 2018,1.19269,245 2019,-0.654916,245