Year	Number
2004-01-01	101
2005-01-01	178
2006-01-01	13612
2007-01-01	52147
2008-01-01	92944
2009-01-01	137286
2010-01-01	106955
2011-01-01	78141
2012-01-01	48051
2013-01-01	16021
2014-01-01	7452
2015-01-01	6277
2016-01-01	5198