Year	% gross
1971	4.97023010253906
1972	6.14515018463135
1973	6.8857798576355
1975	7.87802982330322
1997	25.3683490753174
2003	41.1750297546387
2012	59.8290786743164
2014	60.9120597839355
2015	66.9892501831055
2016	69.9590682983398
2017	77.0124206542969
2020	76.272819519043
2021	79.3204803466797