Year	% gross
1971	37.4000396728516
1972	39.2746505737305
1973	38.8507118225098
1974	37.6709213256836
1976	38.5051803588867
1977	40.9722099304199
1978	43.5095710754395
1979	44.2015190124512
1980	45.2523612976074
1982	45.0767211914062
1983	45.8291397094727
1984	47.8478202819824
1986	54.7034111022949
1987	56.4323310852051
1988	58.468391418457
1989	61.0929985046387
1990	61.5565490722656
1991	63.2926712036133
1992	64.8081817626953
1993	68.4580230712891
1994	69.8999786376953
1995	73.4406433105469
1997	72.1709976196289
1999	83.0259399414062
2000	85.5262832641602
2001	97.6928405761719
2002	103.219520568848
2003	104.917579650879
2004	98.3676605224609
2005	91.5211410522461
2006	94.9719467163086
2007	96.7577972412109
2008	93.4539489746094
2009	82.9080276489258
2010	86.9506530761719
2011	90.6414337158203
2012	86.4192276000977
2013	102.86009979248
2014	106.459777832031
2015	107.750328063965
2016	109.02458190918
2017	114.887641906738
2018	112.784530639648
2019	113.458229064941
2020	113.489212036133
2021	115.093872070312