Year	Number
2004-01-01	31332685
2005-01-01	32996923
2006-01-01	34683049
2007-01-01	36337158
2008-01-01	38638909
2009-01-01	39986516
2010-01-01	48784254
2011-01-01	55578265
2012-01-01	60196294
2013-01-01	65666487
2014-01-01	70008283
2015-01-01	77584153
2016-01-01	83985062