Year | Value | 2021 | 20,136.4 | 2020 | 20,136.4 | 2019 | 20,136.4 | 2018 | 20,136.4 | 2017 | 20,138.1 | 2016 | 20,142 | 2015 | 20,142.6 | 2014 | 20,140 | 2013 | 20,140 | 2012 | 20,145.7 | 2011 | 20,146 | 2010 | 20,146.2 | 2009 | 20,145.8 | 2008 | 20,146.2 | 2007 | 20,140 | 2006 | 20,140 | 2005 | 20,140 | 2004 | 20,140 | 2003 | 20,140 | 2002 | 20,140 | 2001 | 20,140 | 2000 | 20,140 | 1999 | 20,140 | 1998 | 20,140 | 1997 | 20,140 | 1996 | 20,140 | 1995 | 20,140 | 1994 | 20,140 | 1993 | 20,140 | 1992 | 20,140 |
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