Year Index 1980 57.13 1981 61.37 1982 62.21 1983 62.84 1984 63.26 1985 63.369 1986 63.684 1987 65.444 1988 67.301 1989 69.122 1990 73.012 1991 73.66 1992 74.47 1993 74.424 1994 76.046 1995 78.019 1996 81.062 1997 81.361 1998 81.211 1999 82.476 2000 85.387 2001 83.714 2002 85.646 2003 86.109 2004 90.363 2005 95.676 2006 100 2007 104.248 2008 105.666 2009 109.792 2010 110.371 2011 113.976 2012 115.289 2013 116.224 2014 116.305 2015 116.12 2016 116.646 2017 118 2018 120.955 2019 121.376 2020 122.944 2021 124.509 2022 126.122 2023 127.856 2024 129.666