| Year | Value | | 2023 | 4,564.34263683 | | 2022 | 4,345.7971651291 | | 2021 | 4,962.7791563275 | | 2020 | 4,744.7294083851 | | 2019 | 5,094.5109157834 | | 2018 | 4,966.1738272582 | | 2017 | 4,937.8416631788 | | 2016 | 4,643.7771946405 | | 2015 | 4,706.6281811764 | | 2014 | 4,400.8439359737 | | 2013 | 4,564.823872005 | | 2012 | 5,408.5977554561 | | 2011 | 5,750.0261951011 | | 2010 | 5,419.5160696643 | | 2009 | 5,010.5613187254 | | 2008 | 6,287.1878489843 | | 2007 | 6,564.6437994723 | | 2006 | 6,451.7702532417 | | 2005 | 6,314.9052275824 |
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