Year	% gross
1971	12.8841199874878
1972	13.3142995834351
1973	15.3968496322632
1974	16.4883708953857
1975	17.0247097015381
1978	20.6980991363525
1979	21.7067794799805
1980	21.8078899383545
1981	22.2502307891846
1982	24.1268005371094
1983	25.3161201477051
1984	26.5300407409668
1985	28.7783699035645
1986	29.7089290618896
1987	31.9063701629639
1988	33.3106498718262
1989	34.2155685424805
1990	37.2037887573242
1991	38.6040000915527
1993	45.3334693908691
1994	49.5368118286133
1995	55.8228607177734
1996	58.3744316101074
1999	60.0418586730957
2000	59.5296096801758
2001	60.7619400024414
2002	62.6533012390137
2003	64.4661331176758
2004	67.6734085083008
2005	69.2462997436523
2006	70.1428604125977
2007	69.3764266967773
2008	69.8833084106445
2009	72.0740432739258
2010	74.7183227539062
2011	75.8973999023438
2012	78.568359375
2013	81.4389572143555
2014	84.1571884155273
2015	86.9811706542969
2016	88.0689697265625
2017	92.0985870361328
2018	90.0073776245117
2019	91.1066436767578
2020	91.3419799804688
2021	95.5878219604492