Year	Number
2004-01-01	15228923.00
2005-01-01	16720068.00
2006-01-01	19001057.00
2007-01-01	21644070.00
2008-01-01	26959892.00
2009-01-01	24637737.00
2010-01-01	31068412.00
2011-01-01	31392840.71
2012-01-01	36978653.00
2013-01-01	34160189.00
2014-01-01	36986217.00
2015-01-01	37543395.00