Year	Number
2004-01-01	1291
2005-01-01	1313
2006-01-01	1331
2007-01-01	2203
2008-01-01	2498
2009-01-01	2788
2010-01-01	2943
2011-01-01	3107
2012-01-01	3253
2013-01-01	3378
2014-01-01	3456
2015-01-01	3547
2016-01-01	3540
2017-01-01	3554