Year	Number
2004-01-01	3094962
2005-01-01	3306060
2006-01-01	3683176
2007-01-01	3139427
2008-01-01	3134157
2009-01-01	3661132
2010-01-01	4180397
2011-01-01	4672842
2012-01-01	5388827
2013-01-01	5894186
2014-01-01	6610943