Year	Number
2006-01-01	23162
2007-01-01	20534
2008-01-01	26690
2009-01-01	34905
2010-01-01	51629
2011-01-01	52019
2012-01-01	74508
2013-01-01	92721
2014-01-01	102147
2015-01-01	84137