Year	% gross
1971	56.3456611633301
1972	61.214469909668
1973	63.8337287902832
1974	66.6735992431641
1975	68.554443359375
1976	71.7865982055664
1977	73.3704833984375
1978	74.9866333007812
1979	75.1322021484375
1980	76.7668075561523
1981	78.1925430297852
1982	82.0507202148438
1983	80.3437194824219
1984	84.2612380981445
1985	85.7291870117188
1986	87.0319976806641
1987	89.3391265869141
1988	89.6807708740234
1989	91.188606262207
1990	91.8173828125
1991	92.6628112792969
1992	94.3058166503906
1993	92.0064315795898
1994	90.5001831054688
1995	92.5607299804688
1996	93.1863708496094
1997	93.4284362792969
1998	94.2365570068359
1999	94.7432098388672
2000	95.2045364379883
2001	98.7545623779297
2002	103.103721618652
2003	101.018333435059
2004	100.442573547363
2005	104.057121276855
2006	104.147453308105
2007	101.275436401367
2010	108.359893798828
2011	106.219139099121
2012	106.309387207031
2013	106.145317077637
2014	100.993431091309
2015	99.680793762207
2016	99.9767608642578
2017	101.024032592773
2018	101.46395111084
2019	104.945320129395
2020	103.099136352539
2021	104.245338439941