Year	% gross
1971	0.735979974269867
1972	0.76172000169754
1973	0.813279986381531
1974	0.917219996452332
1975	0.942409992218018
1976	1.01830005645752
1982	1.32369005680084
1991	1.01888000965118
1992	1.16232001781464
1993	1.35827004909515
1994	1.35806000232697
2005	5.06897020339966
2006	4.57463979721069
2007	5.71916007995605
2008	7.70093011856079
2009	8.11513996124268
2011	11.156060218811
2012	11.4314603805542
2013	13.493800163269
2014	15.2124500274658
2015	15.726619720459
2016	15.7808103561401
2017	16.3660793304443
2018	16.0154399871826
2019	17.4338893890381
2020	18.6487197875977
2021	19.1863193511963
2022	20.3897304534912