| Year | Value | | 2022 | 136.42624525038 | | 2021 | 122.2670918918 | | 2020 | 118.29968552161 | | 2019 | 118.0656464429 | | 2018 | 114.98856170052 | | 2017 | 113.78945104102 | | 2016 | 112.12083037923 | | 2015 | 111.8153849284 | | 2014 | 112.41899555857 | | 2013 | 111.93882522722 | | 2012 | 109.99485936697 | | 2011 | 107.33641771315 | | 2010 | 100 | | 2009 | 96.636557244621 | | 2008 | 99.023279723875 | | 2007 | 90.555922743629 | | 2006 | 86.773885584196 | | 2005 | 86.237790996548 | | 2004 | 87.449126796608 | | 2003 | 88.390241533577 | | 2002 | 89.359626036937 |
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