Year Index 1980 86.75 1981 94.183 1982 97.967 1983 101.817 1984 105.783 1985 109.283 1986 111.133 1987 115.783 1988 120.983 1989 126.95 1990 134.267 1991 138.2 1992 142.55 1993 146.333 1994 150.317 1995 154.383 1996 159.15 1997 161.833 1998 164.433 1999 169.267 2000 175.067 2001 177.783 2002 182.433 2003 185.917 2004 191.883 2005 198.95 2006 203.325 2007 211.63 2008 213.113 2009 217.202 2010 220.871 2011 227.687 2012 231.834 2013 234.892 2014 236.104 2015 237.826 2016 242.997 2017 248.262 2018 253.152 2019 259.918 2020 266.159 2021 272.079 2022 278.167 2023 284.377 2024 290.458