Year	% gross
1970	32.8641815185547
1971	37.9975700378418
1972	43.8012008666992
1973	49.1805992126465
1974	51.2461814880371
1975	51.4939613342285
1976	52.5943984985352
1977	53.2525215148926
1978	51.5462989807129
1979	48.2526817321777
1980	43.5805892944336
1981	41.4184494018555
1982	38.9790115356445
1983	37.7784309387207
1984	37.8283996582031
1985	39.2522087097168
1986	40.5852088928223
1987	43.0556716918945
1988	44.7579383850098
1989	45.7118988037109
1990	46.0609512329102
1991	47.9584693908691
1992	50.012020111084
1993	51.674129486084
1994	52.4448890686035
1995	54.1859283447266
1996	56.8622894287109
1997	58.807689666748
1998	60.2883605957031
1999	61.5762596130371
2000	62.4947509765625
2001	64.4506530761719
2002	65.2633819580078
2003	66.5245819091797
2004	69.1579437255859
2005	71.2633666992188
2006	73.7292098999023
2007	77.2675018310547
2008	79.8898010253906
2009	83.9984436035156
2010	85.8035888671875
2011	87.0810012817383
2012	87.6933364868164
2013	88.667350769043
2014	88.0901718139648
2015	88.2431488037109
2016	87.4482574462891
2017	87.5192108154297
2018	87.8981170654297
2019	89.3249816894531
2020	89.9925537109375
2021	90.5679092407227
2022	91.0765686035156