Year	% gross
1970	26.6337108612061
1971	26.8145599365234
1972	28.8961505889893
1973	30.2538204193115
1974	31.5902194976807
1975	33.7029685974121
1976	35.8429412841797
1977	37.9743690490723
1978	39.7252388000488
1979	40.9528884887695
1980	42.0536193847656
1981	42.9041595458984
1982	44.2486000061035
1983	45.2062110900879
1984	46.2776184082031
1985	47.5431900024414
1986	49.7071685791016
1987	50.9745483398438
1988	51.7058181762695
1989	52.969539642334
1990	55.9892501831055
1991	56.4671783447266
1992	56.273120880127
1993	57.8768997192383
1994	60.6682014465332
1995	61.1727905273438
1996	61.4788818359375
1997	62.9796981811523
1998	64.7003173828125
1999	66.4079818725586
2000	67.7556381225586
2001	68.9742736816406
2002	69.9832534790039
2003	71.0551605224609
2004	72.0525512695312
2005	71.8298416137695
2006	71.9401092529297
2007	70.6721496582031
2008	71.4804077148438
2009	72.9831466674805
2010	73.7008819580078
2011	76.7249908447266
2012	77.5050277709961
2013	75.3505325317383
2014	75.6817474365234
2015	76.0283813476562
2016	75.9689102172852
2017	76.089599609375
2018	76.47412109375
2019	76.9389038085938
2020	77.5646133422852
2021	78.418586730957
2022	78.9462585449219