Year	% gross
1970	6.97324991226196
1971	8.38206958770752
1972	9.19495964050293
1973	12.9563503265381
1974	14.8754100799561
1975	16.7509708404541
1976	18.7277393341064
1977	20.1101303100586
1978	19.8991394042969
1979	19.9206104278564
1980	20.5821495056152
1981	22.6867694854736
1983	22.5155601501465
1984	26.5596103668213
1985	29.9286308288574
1986	31.4333305358887
1987	32.1252212524414
1988	31.6827793121338
1989	37.712718963623
1990	41.8292198181152
1991	51.5393905639648
1992	50.0954818725586
1993	53.5575904846191
1994	51.1984710693359
1995	57.8427581787109
1998	73.8812637329102
1999	74.2699279785156
2000	75.6811676025391
2001	74.5724334716797
2002	75.5664215087891
2003	76.1754684448242
2004	77.5575866699219
2005	78.0318984985352
2006	80.7941665649414
2007	81.4087295532227
2008	77.8342437744141
2021	73.7069625854492