Year	% gross
1970	2.75893998146057
1971	2.81644010543823
1972	2.96901988983154
1973	2.99586009979248
1974	3.13314008712769
1975	3.12248992919922
1976	3.08575010299683
1977	3.34289002418518
1978	3.41341996192932
1979	3.94774007797241
1980	4.05921983718872
1981	4.20999002456665
1982	4.33495998382568
1983	4.67522001266479
1984	4.84496021270752
1985	4.86132001876831
1986	4.90388011932373
1987	4.83179998397827
1988	4.69250011444092
1989	4.6667799949646
1990	4.77597999572754
1991	4.82898998260498
1992	4.77944993972778
1993	4.84904003143311
1994	4.78594017028809
1995	4.78491020202637
1996	4.89402008056641
1997	4.97886991500854
1998	5.14524984359741
1999	5.34967994689941
2000	5.65211009979248
2001	6.20097017288208
2002	6.37576007843018
2003	6.56000995635986
2004	6.75048017501831
2005	7.18191003799438
2006	7.72318983078003
2007	8.29870986938477
2008	9.07678031921387
2009	9.95256042480469
2010	10.8309202194214
2011	11.1708202362061
2012	11.5084800720215
2013	11.8685998916626
2014	12.1881999969482
2015	12.4749298095703
2016	12.6012096405029
2017	12.6915302276611
2018	13.1184301376343
2019	13.6759796142578
2020	13.6400003433228
2021	13.5237398147583
2022	13.6531095504761