Date Overall Subscriptions Single-Copy Sales
2008 -1.1 0.3 -11.2
2009 -2.2 -0.8 -9.3
2010 -1.5 -1.1 -8.2
2011 -1.0 0.04 -8.9
2012 -0.3 0.5 -8.0
2013 -1.6 -0.7 -11.2
2014 -2.2 -1.16 -14.2

Source: Alliance for Audited Media