Year	% gross
1981	22.2283802032471
1986	22.2490997314453
1988	11.649640083313
1989	11.2941799163818
1990	11.798020362854
1991	20.9891395568848
2014	7.81461000442505
2019	12.9755001068115
2020	14.3487100601196
2021	16.4158401489258
2022	18.2516593933105