Year	% gross
1971	1.52562999725342
1972	1.59090995788574
1973	1.79475998878479
1974	2.23470997810364
1975	2.82229995727539
1976	3.58782005310059
1977	4.20801019668579
1978	5.30854988098145
1979	5.35995006561279
1980	5.59186983108521
1981	6.17799997329712
1982	6.60477018356323
1983	7.22791004180908
1984	7.29809999465942
1985	8.12310028076172
1986	8.53995990753174
1987	8.38236045837402
1989	8.3003101348877
1990	9.06834030151367
1991	9.69799995422363
1992	10.083459854126
1993	11.5925903320312
1994	11.4060401916504
1995	12.2804803848267
1996	12.4868497848511
1997	12.8292102813721
1998	13.3387498855591
1999	16.3975200653076
2000	17.9748592376709
2001	19.7702102661133
2002	21.1851902008057
2003	26.1267395019531
2004	29.4974994659424
2005	31.1733798980713
2006	29.8706092834473
2007	29.2581195831299
2008	29.2175903320312
2009	29.6792507171631
2011	28.9419498443604
2012	36.0444107055664
2013	43.163501739502
2014	51.2110710144043
2015	56.5505714416504
2016	64.6551132202148
2017	72.4816665649414
2018	74.5258178710938
2019	79.6130676269531
2020	74.7805709838867
2021	74.3924865722656
2022	73.7492065429688