Year Number 2004-01-01 893 2005-01-01 879 2006-01-01 862 2007-01-01 847 2008-01-01 818 2009-01-01 785 2010-01-01 758 2011-01-01 726 2012-01-01 696 2013-01-01 673 2014-01-01 648 2015-01-01 632 2016-01-01 602