Year	Number
2009-01-01	986205
2010-01-01	928481
2011-01-01	916960
2012-01-01	1091289
2013-01-01	1113423
2014-01-01	1179615
2015-01-01	1415753
2016-01-01	1556353
2017-01-01	1558557