Year	% gross
1970	20.7975196838379
1971	20.8304996490479
1972	21.7501602172852
1973	22.7171802520752
1974	23.2238807678223
1975	24.1769504547119
1976	25.5143604278564
1977	26.0590896606445
1978	26.6202907562256
1979	26.4647693634033
1980	26.8873291015625
1981	26.8190498352051
1982	26.8582897186279
1983	26.7197608947754
1984	26.8622703552246
1985	27.3588008880615
1986	27.5871505737305
1987	27.6023902893066
1988	28.0771198272705
1989	28.99169921875
1990	29.7224407196045
1991	31.2352294921875
1992	32.3251304626465
1993	34.5443992614746
1994	37.1098213195801
1995	37.9523086547852
1996	39.4495887756348
1997	40.9159889221191
1998	41.6750793457031
1999	43.4694709777832
2000	45.03662109375
2001	47.1980209350586
2002	49.1353416442871
2003	51.2769813537598
2004	53.0716094970703
2005	54.4882888793945
2006	55.4942016601562
2007	56.078441619873
2008	56.9835891723633
2009	58.0081901550293
2010	59.238151550293
2011	59.9583892822266
2012	60.222541809082
2013	60.6269187927246
2014	61.8764991760254
2015	63.0396118164062
2016	63.4003105163574
2017	64.4710388183594
2018	65.2710266113281
2019	66.1413116455078
2020	66.6092681884766
2021	68.4336700439453
2022	68.6703796386719