Year	% gross
1974	2.26044011116028
1975	2.60879993438721
1976	3.15129995346069
1977	4.49557018280029
1978	5.06596994400024
1980	5.4207501411438
1988	7.40739011764526
1989	7.47041988372803
1990	7.76210021972656
1991	7.88691997528076
1992	7.87383985519409
1993	7.90798997879028
1994	8.50920963287354
1999	13.7539901733398
2000	14.3726902008057
2003	18.5894107818604
2004	18.6878795623779
2008	21.3043994903564
2010	20.7102108001709
2012	22.0124702453613
2013	22.6361999511719
2014	22.8545894622803
2015	23.5655307769775
2016	24.4611206054688
2017	28.3683204650879
2018	30.4485702514648
2019	29.4035091400146