Year	% gross
1977	8.6057300567627
1978	9.03468990325928
1979	9.57367992401123
1980	10.2526197433472
1981	10.9903001785278
1982	11.5261898040771
1983	11.9963903427124
1984	12.6256704330444
1985	13.3441600799561
1986	13.7898902893066
1987	14.482310295105
1988	14.8267297744751
1989	15.7834901809692
1990	17.7891407012939
1991	18.9633007049561
1992	20.2245502471924
1993	21.6546897888184
1994	23.1691493988037
1995	24.1416397094727
1996	25.1605701446533
1998	30.1510105133057
1999	31.8522491455078
2000	32.7182884216309
2001	33.7478408813477
2002	34.8213500976562
2003	38.2751998901367
2004	40.5377311706543
2005	41.9665794372559
2006	43.8486404418945
2007	45.928409576416
2008	49.4976196289062
2009	50.5931816101074
2010	52.520679473877
2011	53.1403388977051
2012	54.921630859375
2013	56.568531036377
2014	58.4896507263184
2015	61.7639312744141
2016	61.9978904724121
2017	64.0415267944336
2018	66.2318420410156
2019	68.6342697143555
2020	71.1914291381836
2021	75.9534072875977
2022	78.8906402587891