Year	Number
2004-01-01	21504.00000000
2005-01-01	365196.99601323
2006-01-01	615185.88500236
2007-01-01	895797.91629387
2008-01-01	1389332.85665885
2009-01-01	2287035.65180187
2010-01-01	2637430.38576912
2011-01-01	3528331.94766556
2012-01-01	5997206.00000000
2013-01-01	6523666.00000000
2014-01-01	7155543.00000000