Year	Number
2004-01-01	13380
2005-01-01	14791
2006-01-01	16960
2007-01-01	18850
2008-01-01	21912
2009-01-01	23944
2010-01-01	22444
2011-01-01	28817
2012-01-01	63671
2013-01-01	76136
2014-01-01	90678
2015-01-01	99286
2016-01-01	103419