Year	% gross
1970	6.2035698890686
1973	6.40404987335205
1974	6.71888017654419
1975	7.20522022247314
1976	7.68697023391724
1977	7.83289003372192
1978	8.01403045654297
1979	8.70394992828369
1980	9.35589027404785
1981	9.8334903717041
1982	9.72270011901855
1983	9.38889026641846
1984	9.21739959716797
1985	9.30381011962891
1986	9.82042980194092
1987	10.1425895690918
1988	10.0782098770142
1989	10.0535202026367
1990	10.0775499343872
1991	10.0892000198364
1992	10.130729675293
1993	10.2353296279907
1994	11.2520503997803
1995	12.14035987854
1996	13.094030380249
1997	14.1759300231934
1998	14.9259595870972
1999	15.761420249939
2000	16.6944808959961
2001	18.1005592346191
2002	19.8892002105713
2003	22.1005401611328
2004	23.4251594543457
2005	24.7445201873779
2006	26.2037696838379
2007	26.7192096710205
2008	27.526969909668
2009	28.4557991027832
2010	30.0640106201172
2011	31.4352493286133
2012	33.3646583557129
2013	35.5247688293457
2014	41.1300888061523
2015	43.3736381530762
2016	45.1306686401367
2017	46.4918212890625
2018	47.7540092468262
2019	49.3806381225586
2020	52.1183891296387
2021	54.9520797729492
2022	57.3521194458008