Year	Number
2004-01-01	510222
2005-01-01	476312
2006-01-01	498187
2007-01-01	648133
2008-01-01	720048
2009-01-01	747179
2010-01-01	580407
2011-01-01	841372
2012-01-01	647380
2013-01-01	588325
2014-01-01	757670
2015-01-01	805914
2016-01-01	877550