Year	% gross
1970	5.53709983825684
1971	9.01078033447266
1972	10.7250995635986
1973	14.312159538269
1974	15.7336397171021
1975	16.0552406311035
1976	18.5121898651123
1977	20.5515804290771
1978	20.2888107299805
1979	21.5153503417969
1980	22.98464012146
1981	22.9593601226807
1982	23.9510898590088
1983	24.4647102355957
1984	26.5684299468994
1985	28.1448192596436
1987	28.1862602233887
1988	24.6164493560791
1994	31.5379390716553
1998	45.9433784484863
1999	48.8568916320801
2000	53.7550582885742
2001	52.8717002868652
2002	51.5851898193359
2003	54.6598587036133
2004	54.100700378418
2005	52.0040397644043
2006	53.0738792419434
2007	53.0238418579102
2008	52.3847198486328
2009	52.1435089111328
2010	53.4051208496094
2011	51.1891593933105
2012	53.4588088989258
2014	55.3966789245605
2015	58.8828887939453
2016	59.8679008483887
2020	55.2825393676758
2021	65.4109191894531