Year	% gross
1974	7.03794002532959
1975	7.2337498664856
1977	6.99596977233887
1978	8.45034980773926
1979	8.36104011535645
1980	8.97451972961426
1981	8.82719039916992
1983	9.41602993011475
1990	12.9409704208374
1992	14.1314001083374
1994	10.9066495895386
1995	11.5204200744629
1996	14.7385702133179
1997	14.5082302093506
1998	14.8507404327393
1999	15.5182504653931
2000	11.1007204055786
2001	12.544529914856
2004	17.2686100006104
2006	17.123929977417
2009	18.52001953125
2016	13.329662322998
2017	29.2097110748291
2018	35.1244850158691
2019	35.034854888916
2020	32.9128494262695
2021	30.4551391601563