Year Index 1996 51.514 1997 59.955 1998 61.515 1999 63.694 2000 68.017 2001 71.245 2002 74.82 2003 75.88 2004 77.773 2005 80.207 2006 85.721 2007 91.169 2008 98.516 2009 98.515 2010 100 2011 102.475 2012 103.139 2013 102.886 2014 103.851 2015 105.483 2016 106.892 2017 109.471 2018 110.935 2019 112.577 2020 114.302 2021 116.317 2022 118.613 2023 121.218 2024 123.744