Year	Number
2004-01-01	1450000
2005-01-01	1410000
2006-01-01	1580000
2007-01-01	1840000
2008-01-01	1980000
2009-01-01	2450000
2010-01-01	3350000
2011-01-01	3820000
2012-01-01	4383503
2013-01-01	4891852
2014-01-01	6054151
2015-01-01	7121831
2016-01-01	11039183
2017-01-01	12803398