Year	% gross
1970	23.7591094970703
1971	23.4887199401855
1972	23.9558200836182
1973	24.3445606231689
1974	24.8028602600098
1975	26.0052890777588
1976	26.7862091064453
1977	27.4799194335938
1978	28.8690700531006
1981	33.3656883239746
1982	35.7619514465332
1983	38.9996681213379
1984	39.3872299194336
1988	55.0009307861328
1989	54.4538993835449
1990	51.1860313415527
1991	49.5046806335449
1992	48.4690895080566
1993	48.4627304077148
1994	48.5002593994141
1995	51.2360801696777
1996	53.964038848877
1999	55.8727111816406
2000	56.5030288696289
2001	56.7857704162598
2002	58.0610885620117
2003	61.241870880127
2004	63.4321098327637
2005	62.204231262207
2006	64.7873992919922
2007	72.0823593139648
2008	70.8812866210938
2009	75.2602996826172
2010	76.0621566772461
2011	78.7871932983398
2012	80.1083297729492
2013	85.5210723876953
2014	85.4386520385742
2015	89.3442687988281
2016	87.9027709960938
2017	91.0240783691406
2018	93.2387237548828
2019	94.7910003662109
2020	97.7020034790039
2021	98.620002746582
2022	98.5879974365234