Year	Number
2004-01-01	112192
2005-01-01	172578
2006-01-01	327844
2007-01-01	580090
2008-01-01	764986
2009-01-01	880980
2010-01-01	1070601
2011-01-01	1448231
2012-01-01	1520229
2013-01-01	1933796
2014-01-01	2176152
2015-01-01	2068306
2016-01-01	2182221