Year	Number
2004-01-01	29
2005-01-01	35
2006-01-01	49
2007-01-01	68
2008-01-01	84
2009-01-01	87
2010-01-01	106
2011-01-01	113
2012-01-01	121
2013-01-01	123
2014-01-01	129
2015-01-01	128