Year	% gross
1970	17.9462890625
1971	18.0721797943115
1972	19.8719806671143
1973	21.1229095458984
1974	22.3714599609375
1975	23.99049949646
1976	25.9978809356689
1977	28.0753593444824
1978	29.7412605285645
1979	31.1126899719238
1980	32.3411598205566
1981	33.5165481567383
1982	35.0925903320312
1983	36.3619613647461
1984	37.6343612670898
1985	39.0964317321777
1986	41.1352005004883
1987	42.4534683227539
1988	43.3714904785156
1989	44.7912902832031
1990	48.0458106994629
1991	49.078800201416
1992	49.5161209106445
1993	51.3947486877441
1994	54.2219390869141
1995	55.5322799682617
1996	56.2577590942383
1997	58.2854804992676
1998	60.472900390625
1999	62.6276588439941
2000	64.2357788085938
2001	65.5398864746094
2002	66.6995086669922
2003	68.0075836181641
2004	69.2218704223633
2005	69.3277816772461
2006	69.7354888916016
2007	69.0574493408203
2008	69.6131286621094
2009	71.0154037475586
2010	71.7885437011719
2011	74.8683013916016
2012	75.6775894165039
2013	73.6342926025391
2014	74.1675491333008
2015	74.5085678100586
2016	74.243782043457
2017	74.1530838012695
2018	74.8028869628906
2019	75.2396926879883
2020	76.027229309082
2021	76.9394836425781
2022	77.6678314208984