Year	Number
2006-01-01	17218
2007-01-01	13515
2008-01-01	13440
2009-01-01	48006
2010-01-01	43178
2011-01-01	59783
2012-01-01	81683
2013-01-01	110383
2014-01-01	159229
2015-01-01	178056
2016-01-01	226617
2017-01-01	314135