Year	Number
2004-01-01	5646000
2005-01-01	5733000
2006-01-01	5932000
2007-01-01	7675000
2008-01-01	7893000
2009-01-01	7727000
2010-01-01	8074000
2011-01-01	7431158
2012-01-01	7261205
2013-01-01	6995671
2014-01-01	8906815
2015-01-01	9423563
2016-01-01	9576225
2017-01-01	8711631