Year	% gross
1970	33.8424606323242
1971	33.4492301940918
1972	33.1219596862793
1973	32.8800582885742
1974	32.702579498291
1975	32.6984596252441
1976	32.880500793457
1977	33.132251739502
1978	33.0712203979492
1979	32.780590057373
1980	32.6160507202148
1981	32.6435890197754
1982	33.045581817627
1983	33.827018737793
1984	34.6908416748047
1985	35.7593612670898
1986	36.1596412658691
1987	36.0913314819336
1988	36.0043411254883
1989	35.6590118408203
1990	35.5608406066895
1991	35.3235893249512
1992	34.3530807495117
1993	33.1624412536621
1994	32.6902694702148
1995	32.558048248291
1996	33.2100715637207
1997	34.3621597290039
1998	35.3910102844238
1999	37.1361885070801
2000	39.431999206543
2001	42.1897811889648
2002	44.9562110900879
2003	47.9687194824219
2004	48.9563102722168
2005	50.9765586853027
2006	52.9555282592773
2007	54.6448516845703
2008	55.5357704162598
2009	56.6602897644043
2010	58.464298248291
2011	59.9482688903809
2012	61.4611587524414
2013	63.7534408569336
2014	65.9061737060547
2015	67.5576324462891
2016	69.7090682983398
2017	71.7646789550781
2018	73.9450912475586
2019	75.8210601806641
2020	77.5683517456055
2021	80.0232391357422
2022	80.2510986328125