Year	Number
2004-01-01	165504000
2005-01-01	155725000
2006-01-01	161698000
2007-01-01	163742000
2008-01-01	171092000
2009-01-01	176064000
2010-01-01	183459000
2011-01-01	193980000
2012-01-01	203970000
2013-01-01	221426000
2014-01-01	230793000
2015-01-01	225434000
2016-01-01	230655000