Year	% gross
1970	1.06809997558594
1971	1.06412994861603
1972	1.06761002540588
1973	1.08057999610901
1974	1.11521995067596
1975	1.1550600528717
1976	1.19902002811432
1977	1.22897005081177
1978	1.2548600435257
1979	1.28744995594025
1980	1.32427000999451
1981	1.38768005371094
1982	1.44930994510651
1983	1.48052000999451
1984	1.50916004180908
1985	1.54769003391266
1986	1.69834005832672
1987	1.73554003238678
1988	1.76944005489349
1989	1.81020998954773
1990	1.88647997379303
1991	1.95041000843048
1992	2.02674007415771
1993	2.11570000648499
1994	2.20712995529175
1995	2.27219009399414
1996	2.3737199306488
1997	2.48707008361816
1998	2.5861599445343
1999	2.69793009757996
2000	3.00854992866516
2001	3.27328991889954
2002	3.56614995002747
2003	3.82666993141174
2004	4.10133981704712
2005	4.3827600479126
2006	4.59965991973877
2007	4.69283008575439
2008	4.92383003234863
2009	5.10398006439209
2010	5.38265991210938
2011	5.56432008743286
2012	5.995530128479
2013	6.31397008895874
2014	6.43806982040405
2015	6.55534982681274
2016	6.68991994857788
2017	6.77397012710571
2018	6.90422010421753
2019	6.93676996231079
2020	7.28205013275146
2021	7.14864015579224