Year	Number
2004-01-01	228213
2005-01-01	346150
2006-01-01	475101
2007-01-01	552992
2008-01-01	779243
2009-01-01	901013
2010-01-01	970064
2011-01-01	1270366
2012-01-01	1404049
2013-01-01	1490782
2014-01-01	1532221
2015-01-01	1941050
2016-01-01	1948001
2017-01-01	1966952