Year	% gross
1970	20.0271892547607
1971	20.134220123291
1972	21.2903995513916
1973	22.5654296875
1974	23.2255592346191
1975	24.250560760498
1976	25.5020198822021
1977	26.0042591094971
1978	26.5245990753174
1979	26.2396507263184
1980	26.5853004455566
1981	26.7315998077393
1982	27.0661201477051
1983	27.2299404144287
1984	27.6843795776367
1985	28.4263095855713
1986	28.9421405792236
1987	29.296350479126
1988	30.212610244751
1989	31.5800304412842
1990	32.9053001403809
1991	34.7530288696289
1992	36.6965408325195
1993	39.5613899230957
1994	42.8492584228516
1995	44.5308113098145
1996	46.3884086608887
1997	48.4006614685059
1998	49.8006896972656
1999	50.7516784667969
2000	52.0116882324219
2001	53.7706985473633
2002	55.4193801879883
2003	57.4406585693359
2004	59.3625793457031
2005	60.7754096984863
2006	61.7347793579102
2007	61.9871788024902
2008	62.2206192016602
2009	63.0128593444824
2010	64.6264190673828
2011	66.2615203857422
2012	67.1255264282227
2013	67.9894485473633
2014	69.9651718139648
2015	71.4683532714844
2016	72.2051620483398
2017	73.6376190185547
2018	74.7941513061523
2019	76.0167617797852
2020	76.8240814208984
2021	79.6948623657227
2022	79.8030166625977