Year	Number
2004-01-01	446229
2005-01-01	488297
2006-01-01	488712
2007-01-01	610880
2008-01-01	527871
2009-01-01	508064
2010-01-01	743258
2011-01-01	747724
2012-01-01	820786
2013-01-01	591433
2014-01-01	562189
2015-01-01	724137
2016-01-01	642213