Year	Number
2004-01-01	4296
2005-01-01	4365
2006-01-01	4476
2007-01-01	4562
2008-01-01	4654
2009-01-01	4697
2010-01-01	4726
2011-01-01	4548
2012-01-01	4677
2013-01-01	4833
2014-01-01	4968
2015-01-01	5054
2016-01-01	5143