Year	Number
2006-01-01	6857324
2007-01-01	7830471
2008-01-01	8744977
2009-01-01	9841144
2010-01-01	11259201
2011-01-01	12949238
2012-01-01	14659809
2013-01-01	16645188
2014-01-01	19041267
2015-01-01	21724146
2016-01-01	25157983