Year	Number
2004-01-01	617828
2005-01-01	822943
2006-01-01	1524549
2007-01-01	2004450
2008-01-01	2273486
2009-01-01	2276023
2010-01-01	2306961
2011-01-01	1844657
2012-01-01	1916671
2013-01-01	1993036
2014-01-01	2128347
2015-01-01	2145495
2016-01-01	2386496
2017-01-01	2565396