Year	Number
2004-01-01	31101000
2005-01-01	31430000
2006-01-01	31612000
2007-01-01	32974000
2008-01-01	35325000
2009-01-01	35535000
2010-01-01	36638000
2011-01-01	36718000
2012-01-01	36959000
2013-01-01	37365000
2014-01-01	36575000
2015-01-01	36783000
2016-01-01	36822000