Year	% gross
1971	15.0683298110962
1972	15.7593202590942
1973	16.0944805145264
1974	16.5485591888428
1975	18.1010799407959
1976	18.5548706054688
1977	18.665340423584
1978	18.5167503356934
1979	18.5365295410156
1980	18.3573207855225
1981	18.6208095550537
1982	18.9144306182861
1983	21.1245803833008
1984	21.2971096038818
1985	21.3736591339111
1986	22.0037097930908
1987	22.9765205383301
1988	23.7949695587158
1989	24.866720199585
1990	26.7585601806641
1991	29.370189666748
1992	33.5449295043945
1993	38.5480995178223
1994	43.9219703674316
1995	50.3605918884277
1996	52.677490234375
1997	55.7670402526855
1998	56.9180183410645
1999	60.0285491943359
2000	57.370231628418
2001	57.4927787780762
2002	61.1349906921387
2003	61.4617309570312
2004	59.4577484130859
2005	59.2842216491699
2006	59.199031829834
2007	58.8509902954102
2008	57.432788848877
2009	59.1040382385254
2010	59.8535804748535
2011	59.3462715148926
2012	59.2382011413574
2013	57.077220916748
2014	56.9918899536133
2015	56.9323501586914
2016	58.5959014892578
2017	60.1500511169434
2018	61.6712989807129
2019	65.9645614624023
2020	69.986572265625
2021	77.0131607055664
2022	82.6516494750977