Year	% gross
2011	2.43494009971619
2012	1.28270995616913
2013	3.01037001609802
2014	5.92757987976074
2015	12.6884899139404
2016	15.5661001205444
2017	16.4900207519531
2018	14.3093795776367
2019	16.3539600372314
2020	12.6936302185059
2021	15.4710502624512
2022	15.2785797119141