Year	Number
2005-01-01	1837226
2006-01-01	1815747
2007-01-01	2606620
2008-01-01	3527643
2009-01-01	3666048
2010-01-01	4202120
2011-01-01	4262756
2012-01-01	4393955
2013-01-01	5040276
2014-01-01	5809807
2015-01-01	6103839