Year Index 1997 90.807 1998 95.076 1999 89.019 2000 86.989 2001 87.893 2002 95.108 2003 97.043 2004 96.53 2005 100.336 2006 100.885 2007 108.654 2008 111.33 2009 103.729 2010 111.52 2011 112.753 2012 116.606 2013 121.006 2014 117.241 2015 112.894 2016 117.714 2017 120.546 2018 121.34 2019 121.605 2020 123.693 2021 125.668 2022 127.318 2023 129.264 2024 130.594