Year	Number
2004-01-01	36538
2005-01-01	44397
2006-01-01	48606
2007-01-01	45720
2008-01-01	52127
2009-01-01	72205
2010-01-01	80353
2011-01-01	89382
2012-01-01	105480
2013-01-01	104391
2014-01-01	113820
2015-01-01	123619
2016-01-01	146356