Year	% gross
1970	3.0270299911499
1971	3.15804004669189
1973	3.03912997245789
1977	3.02368998527527
1978	3.26345992088318
1982	4.28693008422852
1985	5.77412986755371
1986	6.35550022125244
1987	6.7952299118042
1988	8.26823043823242
1989	8.11958980560303
1990	8.92311954498291
1991	9.98486042022705
1992	10.2838401794434
1993	13.6784496307373
1994	12.612850189209
1995	15.3077402114868
1996	17.7870502471924
1997	17.7390003204346
1998	26.6464405059814
1999	28.8605709075928
2000	30.7711296081543
2001	32.401611328125
2002	32.4452018737793
2003	34.0349502563477
2004	34.5069808959961
2005	35.0612907409668
2006	35.3365707397461
2007	37.1779289245605
2008	39.2612991333008
2009	38.4339904785156
2010	38.6629791259766
2011	37.5735511779785
2012	36.8877792358398
2013	36.6228294372559
2016	43.5440483093262
2018	46.8912506103516
2020	50.8770294189453