Year	Number
2004-01-01	3849
2005-01-01	5100
2006-01-01	86002
2007-01-01	134354
2008-01-01	143791
2009-01-01	165726
2010-01-01	213428
2011-01-01	368348
2012-01-01	426513
2013-01-01	516826
2014-01-01	442031