Year	Number
2004-01-01	75
2005-01-01	92
2006-01-01	132
2007-01-01	233
2008-01-01	268
2009-01-01	281
2010-01-01	285
2011-01-01	303
2012-01-01	332
2013-01-01	402
2014-01-01	516
2015-01-01	608
2016-01-01	742