Year	Number
2004-01-01	1118916.0
2005-01-01	1355714.0
2006-01-01	2515481.0
2007-01-01	3371025.0
2008-01-01	3592000.0
2009-01-01	3653198.0
2010-01-01	3983497.0
2011-01-01	4585637.0
2012-01-01	5048027.0
2013-01-01	7629417.0
2014-01-01	7656754.5