Year	% gross
1970	32.7722702026367
1971	32.9964904785156
1972	33.4245491027832
1973	34.4852981567383
1974	35.3874893188477
1975	37.2156105041504
1976	38.9032707214355
1977	40.888599395752
1978	42.8286590576172
1979	44.2965698242188
1980	45.5904312133789
1981	46.4244117736816
1982	47.9736213684082
1983	48.9295387268066
1984	50.1505393981934
1985	51.5690803527832
1986	53.5182189941406
1987	54.3021392822266
1988	54.3624687194824
1989	54.8668403625488
1990	57.3714485168457
1991	57.1869201660156
1992	55.6051483154297
1993	56.1022109985352
1994	58.1257286071777
1995	57.5218315124512
1996	57.1814002990723
1997	58.1259613037109
1998	59.0934104919434
1999	60.0635681152344
2000	61.2630195617676
2001	62.7918510437012
2002	63.6333618164062
2003	65.2559585571289
2004	67.0655899047852
2005	66.8327178955078
2006	66.3717727661133
2007	64.9365615844727
2008	65.2080078125
2009	66.8798904418945
2010	67.6269073486328
2011	69.5412063598633
2012	70.1916122436523
2013	68.5552291870117
2014	68.5577926635742
2015	69.1852035522461
2016	69.5348281860352
2017	70.0635681152344
2018	70.0726776123047
2019	70.4940795898438
2020	70.4381332397461
2021	71.1608276367188
2022	71.4651870727539