Year	% gross
2010	55.9347190856934
2011	57.5943412780762
2012	59.3537712097168
2013	61.380199432373
2014	62.6332511901855
2015	66.3262023925781
2016	71.9058685302734
2017	66.9533920288086
2018	66.6764602661133
2019	68.4660568237305
2020	69.8945617675781