Year	% gross
1970	25.7006607055664
1971	25.888650894165
1972	28.1414604187012
1973	29.6132507324219
1974	31.0634002685547
1975	33.3384704589844
1976	35.6389007568359
1977	37.9050903320312
1978	39.7795295715332
1979	41.0795288085938
1980	42.0899391174316
1981	42.8236083984375
1982	44.0558891296387
1983	44.8490104675293
1984	45.8089408874512
1985	46.9748992919922
1986	49.1936492919922
1987	50.4819488525391
1988	51.1550903320312
1989	52.3998603820801
1990	55.6062316894531
1991	55.9709396362305
1992	55.5817413330078
1993	57.1198997497559
1994	59.8274307250977
1995	60.039119720459
1996	60.2297706604004
1997	61.7233085632324
1998	63.4509315490723
1999	65.115119934082
2000	66.3640975952148
2001	67.5181121826172
2002	68.3873062133789
2003	69.3877563476562
2004	70.2575988769531
2005	69.773323059082
2006	69.8607864379883
2007	68.4149322509766
2008	69.2223968505859
2009	70.7229690551758
2010	71.4369812011719
2011	74.762077331543
2012	75.6072082519531
2013	73.0915069580078
2014	73.4229125976562
2015	73.2890167236328
2016	73.4195785522461
2017	73.4943237304688
2018	73.7492065429688
2019	74.2449035644531
2020	74.9584274291992
2021	75.8695220947266
2022	76.330207824707