Year	Number
2008-01-01	275566
2009-01-01	292195
2010-01-01	287761
2011-01-01	286214
2012-01-01	290618
2013-01-01	283098
2014-01-01	291506
2015-01-01	307105
2016-01-01	309265
2017-01-01	309978