Year Index 1980 101.845 1981 104.646 1982 107.737 1983 110.938 1984 114.253 1985 117.686 1986 121.242 1987 124.924 1988 108.044 1989 100.815 1990 100 1991 98.519 1992 96.973 1993 95.877 1994 131.114 1995 135.567 1996 159.958 1997 167.899 1998 137.304 1999 177.61 2000 261.158 2001 224.791 2002 220.883 2003 211.492 2004 247.038 2005 299.729 2006 355.237 2007 318.18 2008 385.393 2009 345.816 2010 438.764 2011 487.15 2012 468.478 2013 450.728 2014 423.853 2015 300.075 2016 281.886 2017 329.234 2018 388.391 2019 379.654 2020 376.673 2021 371.464 2022 361.444 2023 358.02 2024 360.927