Year	Number
2004-01-01	1289032
2005-01-01	1490435
2006-01-01	1478717
2007-01-01	1548994
2008-01-01	1593975
2009-01-01	1735451
2010-01-01	1739143
2011-01-01	1465997
2012-01-01	1411684
2013-01-01	1358538
2014-01-01	1928112
2015-01-01	2850576
2016-01-01	3244993
2017-01-01	3244883