Year	% gross
1981	33.6758804321289
1986	38.5483207702637
1988	39.4091987609863
1989	38.5200805664062
1990	37.8886795043945
1991	36.9576606750488
1992	35.824348449707
1994	33.4534492492676
1995	33.8088989257812
1996	29.7491302490234
1999	24.4951400756836
2000	32.0638694763184
2006	56.3105812072754
2010	47.3440017700195
2011	50.9490013122559
2012	54.5530014038086
2013	53.4679985046387
2014	51.7120018005371
2015	49.0320014953613
2016	48.6870002746582
2017	51.064998626709
2018	53.515998840332
2019	59.5820007324219
2020	64.8499984741211