Year Index 1992 0.039 1993 4.337 1994 86.061 1995 113.545 1996 120.141 1997 146.423 1998 144.522 1999 147.481 2000 148.049 2001 152.293 2002 156.627 2003 168.28 2004 171.173 2005 171.899 2006 181.106 2007 193.211 2008 203.466 2009 217.133 2010 235.552 2011 246.51 2012 254.464 2013 268.603 2014 280.899 2015 280.536 2016 277.514 2017 284.906 2018 290.33 2019 297.897 2020 307.565 2021 318.22 2022 329.244 2023 340.65 2024 352.451