Year	Number
2004-01-01	13952
2005-01-01	10046
2006-01-01	14355
2007-01-01	24484
2008-01-01	26459
2009-01-01	28804
2010-01-01	36136
2011-01-01	100857
2012-01-01	105847
2013-01-01	157499
2014-01-01	171493
2015-01-01	202127
2016-01-01	262931
2017-01-01	303813