Year	Number
2004-01-01	2064088
2005-01-01	645112
2009-01-01	2062179
2010-01-01	2180755
2011-01-01	2402327
2012-01-01	2482522
2013-01-01	2659131
2014-01-01	2804393
2015-01-01	2937155
2016-01-01	2720115