| Year | Value | | 2021 | 9,032.2294921875 | | 2020 | 8,149.3955078125 | | 2019 | 8,899.3203125 | | 2018 | 8,726.103515625 | | 2017 | 8,449.169921875 | | 2016 | 6,917.2924804688 | | 2015 | 7,403.3349609375 | | 2014 | 11,034.793945312 | | 2013 | 12,587.62109375 | | 2012 | 12,234.252929688 | | 2011 | 11,358.76171875 | | 2010 | 8,539.91796875 | | 2009 | 6,691.5903320312 | | 2008 | 9,083.5810546875 | | 2007 | 7,270.6791992188 | | 2006 | 5,363.662109375 | | 2005 | 4,072.2734375 | | 2004 | 3,147.0686035156 | | 2003 | 2,217.1611328125 | | 2002 | 1,784.8500976562 | | 2001 | 1,567.5698242188 | | 2000 | 1,279.4036865234 | | 1999 | 953.12365722656 | | 1998 | 1,174.3843994141 | | 1997 | 1,711.1956787109 | | 1996 | 1,558.4974365234 | | 1995 | 1,275.9031982422 | | 1994 | 1,333.8895263672 | | 1993 | 1,452.4812011719 | | 1992 | 1,554.2901611328 |
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