Year Number 2004-01-01 7429 2005-01-01 7112 2006-01-01 6923 2007-01-01 6855 2008-01-01 6813 2009-01-01 6779 2010-01-01 6715 2011-01-01 6718 2012-01-01 6682 2013-01-01 6647 2014-01-01 6478