2011 = 481k (Global: 481k)
2012 = 3.67M (Global: 4.16M)
2013 = 3.20M (Global: 7.36M)
2014 = 2.90M (Global: 10.26M)
2015 = 2.75M (Global: 13.01M)
2016 = 2.40M (Global: 15.41M)
2017 = 1.52M (Global: 16.93M)
2018 = 370k (Global: 17.30M)
LIFETIME = 17.3 million