Year	% gross
1970	1.7307300567627
1971	1.75267994403839
1972	1.86452996730804
1973	1.94149005413055
1974	2.04340004920959
1975	2.17976999282837
1976	2.30199003219604
1977	2.36552000045776
1978	2.55590009689331
1979	2.64584994316101
1980	2.74176001548767
1981	2.79875993728638
1982	2.82365989685059
1983	2.8484799861908
1984	2.87492990493774
1985	2.90972995758057
1986	2.99903011322021
1987	2.96673989295959
1988	3.0171000957489
1989	3.03397989273071
1990	3.04781007766724
1991	3.11051988601685
1992	3.13925004005432
1993	3.20426988601685
1994	3.23517990112305
1995	3.26750993728638
1996	3.31876993179321
1997	3.42337989807129
1998	3.49130988121033
1999	3.57908010482788
2000	3.8924400806427
2001	4.24856996536255
2002	4.54082012176514
2003	4.85404014587402
2004	5.22892999649048
2005	5.61178016662598
2006	6.00368022918701
2007	6.41567993164062
2008	7.12483978271484
2009	7.81892013549805
2010	8.60324954986572
2011	8.92821979522705
2012	9.3014497756958
2013	9.80109977722168
2014	10.1285104751587
2015	10.1616201400757
2016	9.92613983154297
2017	10.0420999526978
2018	10.1174297332764
2019	10.0752296447754
2020	10.4888296127319
2021	10.2846803665161