| Year | Value | | 2021 | 5,334.1639864376 | | 2020 | 4,769.8578031514 | | 2019 | 4,780.2838192209 | | 2018 | 4,842.8154464992 | | 2017 | 4,360.2335456596 | | 2016 | 4,055.3637761579 | | 2015 | 3,840.6319764432 | | 2014 | 4,361.6081484495 | | 2013 | 4,130.9546210174 | | 2012 | 3,678.2044347129 | | 2011 | 4,003.648041266 | | 2010 | 3,551.0471682108 | | 2009 | 3,604.8672857478 | | 2008 | 3,779.0636139941 | | 2007 | 2,933.8050169849 | | 2006 | 2,680.0864731424 | | 2005 | 2,401.235658076 | | 2004 | 2,198.7733429094 | | 2003 | 1,909.8823273077 | | 2002 | 1,589.9250541885 | | 2001 | 1,472.2966710872 | | 2000 | 1,494.4700344966 | | 1999 | 1,533.3737244446 | | 1998 | 1,505.1100275849 | | 1997 | 1,553.3411285826 | | 1996 | 1,827.3556867715 | | 1995 | 1,853.3848241922 | | 1994 | 1,378.0741330167 | | 1993 | 1,009.128290082 |
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