Year Index 2004 61.619 2005 66.956 2006 79.88 2007 84.354 2008 85.227 2009 104.337 2010 102.283 2011 98.836 2012 99.095 2013 98 2014 98.27 2015 107.885 2016 116.678 2017 122.607 2018 127.266 2019 130.448 2020 133.057 2021 135.718 2022 138.432 2023 141.201 2024 144.025