Year Index 1993 34.894 1994 39.409 1995 43.617 1996 47.812 1997 52.733 1998 58.187 1999 62.138 2000 67.194 2001 71.524 2002 82.512 2003 85.638 2004 92.061 2005 100.238 2006 110.195 2007 122.23 2008 144.4 2009 146.902 2010 148 2011 161.9 2012 170.2 2013 174.4 2014 181.7 2015 188.1 2016 183.9 2017 187.8 2018 193.824 2019 200.131 2020 207.298 2021 215.027 2022 223.699 2023 233.49 2024 244.634