Year	Number
2004-01-01	9609
2005-01-01	21019
2006-01-01	89848
2007-01-01	153047
2008-01-01	580539
2009-01-01	656159
2010-01-01	661927
2011-01-01	786509
2012-01-01	867360
2013-01-01	1043183
2014-01-01	1230018
2015-01-01	1452832
2016-01-01	1859071