Year Index 2008 59.153 2009 54.616 2010 56.373 2011 59.146 2012 60.87 2013 61.072 2014 60.586 2015 59.087 2016 58.557 2017 60.566 2018 86.048 2019 120.568 2020 126.352 2021 130.142 2022 134.047 2023 138.068 2024 142.21