Year | Value | 2021 | 16,178.56 | 2020 | 16,351 | 2019 | 16,295 | 2018 | 16,295 | 2017 | 16,294 | 2016 | 16,257 | 2015 | 16,245.1 | 2014 | 16,532.1 | 2013 | 15,861 | 2012 | 15,846.5 | 2011 | 16,209.59 | 2010 | 15,888 | 2009 | 16,239 | 2008 | 16,273 | 2007 | 16,263 | 2004 | 16,530 | 2003 | 16,833 | 2002 | 17,010 | 2001 | 16,992 | 2000 | 16,992 | 1999 | 16,989 | 1998 | 16,999 | 1997 | 16,991 | 1996 | 17,001 | 1995 | 17,001 |
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