Year	Number
2004-01-01	10099
2005-01-01	15083
2006-01-01	21097
2007-01-01	24898
2008-01-01	34795
2009-01-01	39457
2010-01-01	44470
2011-01-01	47757
2012-01-01	52232
2013-01-01	56805
2014-01-01	61839
2015-01-01	63498
2016-01-01	64115