Year	Number
2007-01-01	24444722.3409868
2008-01-01	25169740.6248689
2009-01-01	25102834.4737503
2010-01-01	25423113.6546165
2011-01-01	25743180
2012-01-01	23136888.1041123
2013-01-01	23663810
2014-01-01	23889031
2015-01-01	24101760