| Year | Value | | 2024 | 88.88258428 | | 2023 | 88.5515976 | | 2022 | 88.22192026 | | 2021 | 82.21969752 | | 2020 | 77.60879306 | | 2019 | 73.476665747869 | | 2018 | 71.517100487489 | | 2017 | 71.272332539938 | | 2016 | 69.881646841678 | | 2015 | 68.119786008568 | | 2014 | 63.88688400567 | | 2013 | 60.31 | | 2012 | 56.838782549063 | | 2011 | 35.611541246011 | | 2010 | 37.5 | | 2009 | 35.09999847 | | 2008 | 32.90000153 | | 2007 | 30.79999924 | | 2006 | 28.89999962 | | 2005 | 27.10000038 | | 2004 | 25.350068603623 |
|