Year	% gross
1972	37.8373908996582
1973	42.307430267334
1974	44.2470588684082
1975	44.5200691223145
1976	45.2761001586914
1977	46.2375717163086
1978	45.5874481201172
1979	42.6494789123535
1980	38.3099517822266
1981	35.927791595459
1982	33.802131652832
1983	33.1135711669922
1984	33.3410911560059
1985	34.8363800048828
1986	35.9576110839844
1987	38.6693115234375
1988	40.2382316589355
1989	41.3435592651367
1990	41.7134094238281
1991	43.5880012512207
1992	45.9047698974609
1993	47.6714782714844
1994	49.2981796264648
1995	51.3925704956055
1996	54.3386688232422
1997	56.4086685180664
1998	58.2155494689941
1999	59.8228912353516
2000	61.1544799804688
2001	63.396068572998
2002	64.3906631469727
2003	65.8368988037109
2004	68.8385620117188
2005	71.2940521240234
2006	74.2168197631836
2007	77.9597625732422
2008	80.7926712036133
2009	85.2360992431641
2010	86.3105392456055
2011	87.7333984375
2012	88.6346282958984
2013	89.5478897094727
2014	89.257698059082
2015	89.4016036987305
2016	88.7544326782227
2017	88.7961883544922
2018	89.2809524536133
2019	90.6430282592773
2020	91.1798324584961
2021	91.6543579101562
2022	92.178108215332