Year Number 2005-01-01 292 2006-01-01 356 2007-01-01 422 2008-01-01 536 2009-01-01 569 2010-01-01 607 2011-01-01 685 2012-01-01 829 2013-01-01 965 2014-01-01 990 2015-01-01 1080 2016-01-01 961 2017-01-01 1032