Year	% gross
1980	55.0963706970215
1981	51.8960113525391
1982	53.0634918212891
1983	53.7911682128906
1984	54.5381317138672
1985	55.5361595153809
1986	56.0291481018066
1987	57.1621704101563
1988	57.851978302002
1989	58.1900405883789
1990	58.7607116699219
1991	57.679759979248
1992	55.8791198730469
1993	52.6128883361816
1994	46.9913101196289
1995	45.8317794799805
1996	44.7218399047852
1997	42.7540283203125
1998	40.4848594665527
1999	36.6420211791992
2000	36.2156600952148
2001	36.855770111084
2002	37.9349212646484
2003	40.3579406738281
2004	41.2417602539063
2005	42.3995094299316
2006	44.2694702148438
2007	46.1210517883301
2008	48.4692192077637
2009	49.6926116943359
2010	51.1756210327148
2011	52.6177215576172
2012	53.9530601501465
2013	53.4757385253906
2014	54.619930267334
2015	55.5729904174805
2016	56.7665710449219
2017	57.7587089538574
2018	58.9369506835938
2019	59.8687515258789
2020	61.944938659668