Year	% gross
1970	1.1100800037384
1971	1.11276996135712
1972	1.1207400560379
1973	1.13710999488831
1974	1.16744005680084
1975	1.18947005271912
1976	1.21929001808167
1977	1.25899994373322
1978	1.30632996559143
1979	1.36842000484467
1980	1.42071998119354
1981	1.48995995521545
1982	1.55533003807068
1983	1.58768999576569
1984	1.64401996135712
1985	1.72939002513885
1986	1.82774996757507
1987	1.90734004974365
1988	1.96510004997253
1989	2.05563998222351
1990	2.09157991409302
1991	2.21946001052856
1992	2.35229992866516
1993	2.53988003730774
1994	2.7694399356842
1995	2.80630993843079
1996	2.88437008857727
1997	2.98300004005432
1998	3.09176993370056
1999	3.23791003227234
2000	3.57044005393982
2001	3.87614011764526
2002	4.19374990463257
2003	4.45512008666992
2004	4.69635009765625
2005	4.96298980712891
2006	5.1663498878479
2007	5.32272005081177
2008	5.58206987380981
2009	5.96421003341675
2010	6.33881998062134
2011	6.54704999923706
2012	6.95000982284546
2013	7.30836009979248
2014	7.43631982803345
2015	7.59179019927979
2016	7.67191982269287
2017	7.83418989181519
2018	7.99498987197876
2019	8.05640983581543
2020	8.41911029815674
2021	8.28526973724365