Year	% gross
1971	5.75715017318726
1972	7.13328981399536
1973	7.81115007400513
1975	8.54246044158936
1986	17.8351802825928
1997	21.7443695068359
2003	33.6751098632812
2010	49.0610008239746
2011	47.8409996032715
2012	48.6290016174316
2013	46.5429992675781
2014	49.3192710876465
2015	51.7471084594727
2016	54.4990005493164
2017	59.9155883789062
2018	63.1759986877441
2019	64.4100036621094
2020	58.7264099121094
2021	58.6280784606934