Year	% gross
1970	25.3440399169922
1971	25.369270324707
1972	25.7606601715088
1973	26.1715698242188
1974	26.3918800354004
1975	27.0485095977783
1976	27.8328704833984
1977	28.1377105712891
1978	28.2117805480957
1979	27.9249496459961
1980	27.9420604705811
1981	27.8875102996826
1982	28.0403594970703
1983	28.215690612793
1984	28.5562000274658
1985	29.2119693756104
1986	29.4580993652344
1987	29.5828609466553
1988	29.9577598571777
1989	30.4980297088623
1990	31.1555099487305
1991	32.1615180969238
1992	32.6787605285645
1993	33.6018295288086
1994	34.9241905212402
1995	35.4952392578125
1996	36.698600769043
1997	38.0490303039551
1998	38.6129684448242
1999	40.2529716491699
2000	41.7169990539551
2001	43.7293701171875
2002	45.5897216796875
2003	48.0395889282227
2004	48.8181190490723
2005	50.2461891174316
2006	51.610710144043
2007	52.6491012573242
2008	53.268138885498
2009	54.3743705749512
2010	56.0152015686035
2011	57.1483306884766
2012	58.4849395751953
2013	59.8739585876465
2014	61.7451210021973
2015	63.0545387268066
2016	64.5437469482422
2017	66.0990676879883
2018	67.5102996826172
2019	68.7392501831055
2020	69.8506393432617
2021	72.0429534912109
2022	72.1932601928711