Year	% gross
1971	33.6773910522461
1972	34.877628326416
1973	32.5637512207031
1974	34.1313705444336
1975	35.1337089538574
1976	36.9142684936523
1977	38.3352508544922
1978	39.1022911071777
1980	50.0232086181641
1981	50.4766616821289
1982	54.2416687011719
1983	53.477668762207
1984	56.838680267334
1985	60.4414596557617
1986	59.7764015197754
1988	56.5616416931152
1989	51.4491806030273
1990	49.5937118530273
1991	44.0090217590332
2000	61.1376800537109
2001	73.1187286376953
2011	110.747230529785
2012	113.630157470703
2013	115.526733398438
2015	116.402061462402
2016	118.640083312988
2017	122.32080078125
2018	110.481628417969
2019	140.367706298828
2020	137.540603637695
2021	151.726318359375