Year	Number
2004-01-01	525002
2005-01-01	627629
2006-01-01	635774
2007-01-01	1169910
2008-01-01	1301034
2009-01-01	1394318
2010-01-01	1678527
2011-01-01	1881729
2012-01-01	2146437
2013-01-01	2493472
2014-01-01	2713330
2015-01-01	2833540
2016-01-01	2854300