| | | | | | | | | | | | | | | | Year | Reporting Status | Population | | 2003 | Reporting | 20,327 | | 2004 | Reporting | 20,492 | | 2005 | Reporting | 20,605 | | 2006 | Reporting | 20,918 | | 2007 | Reporting | 20,927 | | 2008 | Reporting | 21,149 | | 2009 | Reporting | 21,378 | | 2010 | Reporting | 21,420 | | 2011 | Reporting | 19,001 | | 2012 | Reporting | 18,808 |
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