Year	% gross
1971	18.5994300842285
1972	18.0327491760254
1975	20.470890045166
1979	25.9210090637207
1980	27.4241504669189
1981	24.925760269165
1982	21.7335796356201
1983	22.4624691009521
1985	21.2781391143799
1986	23.7604904174805
1987	24.6016101837158
1992	23.620080947876
1996	21.4964904785156
1999	28.091100692749
2000	28.1529998779297
2001	31.8894596099854
2002	33.2756004333496
2003	33.0192985534668
2004	34.8871803283691
2005	36.9148597717285
2006	38.1570205688477
2007	40.6457481384277
2008	41.9415588378906
2009	42.0731391906738
2010	42.3140602111816
2011	45.5640182495117
2012	44.8252983093262
2013	48.067008972168
2014	42.533031463623
2015	38.8207511901855
2016	42.1090087890625
2017	43.9945793151855
2018	47.2751083374023
2019	50.3490180969238
2020	51.6985816955566
2021	58.4441413879395
2022	61.5956115722656