Year	Number
2004-01-01	6466133.0000000
2005-01-01	7379363.0000000
2006-01-01	10838321
2007-01-01	12652001
2008-01-01	13810486
2009-01-01	14961108
2010-01-01	18219239
2011-01-01	20037723
2012-01-01	21798944
2013-01-01	25585172
2014-01-01	24601704.6666667