Year	% gross
1971	12.2455196380615
1972	11.8194704055786
1973	13.1325101852417
1974	14.8991098403931
1975	16.4471797943115
1976	18.3945198059082
1977	20.0179290771484
1978	20.3898601531982
1979	21.0144996643066
1980	21.127290725708
1981	21.3051300048828
1982	20.5991802215576
1983	19.3333206176758
1984	19.2926006317139
1985	19.2638893127441
1986	19.7563991546631
1987	20.1282691955566
1988	20.9680404663086
1989	23.1760807037354
1990	24.5781002044678
1991	24.8491497039795
1992	24.5011291503906
1993	26.6234092712402
1994	31.2214107513428
1995	35.945629119873
1996	41.0851593017578
1997	46.6601409912109
1998	44.9086799621582
1999	52.0462989807129
2000	58.9755401611328
2001	66.4961318969727
2002	70.1371383666992
2003	71.3152084350586
2004	72.3196105957031
2005	74.7063369750977
2006	76.1325378417969
2007	78.2333297729492
2008	82.4250411987305
2009	85.7129898071289
2010	92.4768371582031
2011	92.7133026123047
2012	91.733528137207
2013	89.6087188720703
2014	85.1421737670898
2015	83.5581130981445
2016	84.1125717163086
2017	85.0777893066406
2018	85.9320526123047
2019	86.2605895996094
2020	85.6289215087891
2021	85.6924667358398
2022	90.3731231689453