Year	% gross
1970	22.6380596160889
1971	22.6783199310303
1972	23.0063495635986
1973	23.3645896911621
1974	23.5557098388672
1975	23.8093395233154
1976	23.8532295227051
1977	24.4096298217773
1978	24.7922801971436
1979	25.6163101196289
1980	26.7686500549316
1981	27.5472393035889
1982	28.8543796539307
1983	30.6263408660889
1984	31.751859664917
1985	32.547550201416
1986	33.3005485534668
1987	33.2987518310547
1988	33.3961715698242
1989	33.6323089599609
1990	35.326301574707
1991	37.5745086669922
1992	39.7539405822754
1993	41.5232887268066
1994	42.0905418395996
1995	42.1567611694336
1996	42.3517303466797
1997	42.85546875
1998	41.9235382080078
1999	40.9677085876465
2000	42.3302383422852
2001	42.5409698486328
2002	43.8999214172363
2003	45.5176315307617
2004	46.6666717529297
2005	48.5116996765137
2006	49.7972793579102
2007	51.7029418945312
2008	53.9383583068848
2009	53.7524185180664
2010	56.5900917053223
2011	58.9842109680176
2012	61.2676887512207
2013	61.5438385009766
2014	65.6227874755859
2015	65.8443069458008
2016	67.3802490234375
2017	66.1990127563477
2018	67.5988311767578
2019	67.7088088989258
2020	69.4429397583008
2021	71.4060287475586
2022	71.8284683227539