Year	% gross
1971	6.32577991485596
1972	6.96503019332886
1982	12.8772296905518
1983	11.8050098419189
1998	12.7500600814819
1999	12.8194704055786
2000	14.0910596847534
2001	16.1900501251221
2002	17.007230758667
2008	25.1816005706787
2009	27.0074691772461
2010	32.8678894042969
2011	33.9281997680664
2016	64.8998184204102