Year	Number
2006-01-01	30377.25
2007-01-01	37998.75
2008-01-01	41277.50
2009-01-01	42972.00
2010-01-01	43156.50
2011-01-01	42846.50
2012-01-01	43231.50
2013-01-01	45665.50
2014-01-01	49533.25
2015-01-01	52896.25
2016-01-01	57438.00
2017-01-01	60944.75