Year Number 2004-01-01 2749000 2005-01-01 2822000 2006-01-01 2857000 2007-01-01 2941000 2008-01-01 2926000 2009-01-01 2714000 2010-01-01 2569000 2011-01-01 2800000 2012-01-01 3116000