Year	Subscribers
2001	1613
2003	11611
2004	164775
2005	555495
2006	893548
2007	1293341
2008	2072799
2009	2624278
2010	3251851
2011	3895000
2012	4519000
2013	5192000
2014	5440000
2015	6229000
2016	7219000
2017	8208000