Year	% gross
1970	3.11837005615234
1971	3.16577005386353
1972	3.44893002510071
1973	3.80380010604858
1974	4.12883996963501
1975	4.57711982727051
1976	5.14273023605347
1977	5.53276014328003
1978	5.91717004776001
1979	6.19616985321045
1980	6.64143991470337
1981	7.16782999038696
1982	7.54087018966675
1983	7.7763500213623
1984	8.07415008544922
1985	8.22659969329834
1986	8.40149974822998
1987	8.57168960571289
1988	9.15711975097656
1989	9.19163990020752
1990	9.50979995727539
1991	9.53849029541016
1992	10.2218503952026
1993	11.036919593811
1994	11.6518096923828
1995	12.415060043335
1996	13.5847597122192
1997	14.6445999145508
1998	15.5906400680542
1999	16.8451194763184
2000	17.3346004486084
2001	18.2305908203125
2002	18.9268093109131
2003	19.5633792877197
2004	20.7317199707031
2005	22.0661792755127
2006	23.4417591094971
2007	24.9461193084717
2008	28.2365894317627
2009	28.4506492614746
2010	29.9019298553467
2011	30.3504009246826
2012	32.2110710144043
2013	33.1377601623535
2014	35.332649230957
2015	37.5527610778809
2016	37.5920906066895
2017	37.8944511413574
2018	38.9235610961914
2019	39.2050514221191
2020	39.4194984436035
2021	39.6426010131836
2022	40.0107383728027