Year Index 1990 39.073 1991 39.801 1992 39.725 1993 44.376 1994 52.678 1995 55.664 1996 63.727 1997 68.235 1998 70.15 1999 78.917 2000 100 2001 109.944 2002 119.571 2003 121.671 2004 130.537 2005 134.931 2006 151.874 2007 167.028 2008 185.248 2009 198.146 2010 205.209 2011 213.017 2012 240.458 2013 261.609 2014 277.981 2015 283.407 2016 311.342 2017 334.232 2018 348.583 2019 366.709 2020 386.878 2021 408.157 2022 430.605 2023 454.288 2024 479.274