Year	Number
2004-01-01	703
2009-01-01	785
2010-01-01	886
2011-01-01	1040
2012-01-01	1130
2013-01-01	1197
2014-01-01	1392
2015-01-01	1475
2016-01-01	2224
2017-01-01	2312