Year	% gross
1971	3.96902990341187
1973	4.32340002059937
1974	4.56256008148193
1975	5.0462498664856
1976	5.65050983428955
1977	6.34404993057251
1978	6.86052989959717
1981	9.77431011199951
1991	44.376579284668
1992	47.0017204284668
1993	52.1504211425781
2012	85.2200012207031
2014	71.4127655029297
2015	72.3868713378906
2016	71.7504043579102
2017	74.9541397094727
2018	78.8053588867188
2019	78.6294555664063
2020	75.1398849487305
2021	73.8448867797852
2022	74.3750381469727