Year	Number
2004-01-01	13397409.8317
2005-01-01	19155168.0234
2006-01-01	17761809.0000
2007-01-01	19204772.1048
2008-01-01	19528606.2222
2009-01-01	18674526.0000
2010-01-01	17747414.0000
2011-01-01	20599700.0000
2012-01-01	21364069.0000
2013-01-01	20662665.0000
2014-01-01	23340056.0000
2015-01-01	25367035.0000
2016-01-01	30464282.0000
2017-01-01	26950632.0000