| Year | Value | | 2021 | 5,248.3851013247 | | 2020 | 4,737.1437067081 | | 2019 | 5,182.2213698823 | | 2018 | 5,569.9810807439 | | 2017 | 5,480.3432634307 | | 2016 | 5,094.6522904182 | | 2015 | 5,154.1114875848 | | 2014 | 5,797.5236403263 | | 2013 | 5,520.3747724717 | | 2012 | 4,746.7698250329 | | 2011 | 4,925.6811148164 | | 2010 | 3,972.7270507747 | | 2009 | 3,294.5849491101 | | 2008 | 3,703.1250437594 | | 2007 | 2,693.9965842918 | | 2006 | 1,942.1291469938 | | 2005 | 1,517.8200369883 | | 2004 | 1,376.0703510468 | | 2003 | 1,083.8963176866 | | 2002 | 1,115.9863438264 | | 2001 | 1,253.6030868548 | | 2000 | 1,294.3969549111 | | 1999 | 1,400.1322987867 | | 1998 | 1,517.983502096 | | 1997 | 1,670.0383032846 | | 1996 | 1,757.0465318831 | | 1995 | 1,569.8742010601 |
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