Year	% gross
1970	23.4635696411133
1971	23.5824794769287
1972	24.958610534668
1973	26.3118000030518
1974	26.9498291015625
1975	28.1113204956055
1976	29.4370708465576
1977	29.824520111084
1978	30.1896495819092
1979	29.6890697479248
1980	29.9844093322754
1981	29.7733707427979
1982	29.7535400390625
1983	29.5892696380615
1984	29.7785701751709
1985	30.4193305969238
1986	30.6906795501709
1987	30.8844604492188
1988	31.6234493255615
1989	32.7518005371094
1990	33.8483085632324
1991	35.4770011901855
1992	36.8317489624023
1993	39.2986717224121
1994	42.3233795166016
1995	43.2231788635254
1996	44.6262893676758
1997	45.9823989868164
1998	46.716869354248
1999	47.7738418579102
2000	48.9527587890625
2001	50.5437393188477
2002	51.7199096679688
2003	53.5436515808105
2004	55.0928001403809
2005	56.2136497497559
2006	56.8696594238281
2007	56.9505500793457
2008	57.1276092529297
2009	57.8101806640625
2010	59.456241607666
2011	60.990348815918
2012	61.9271507263184
2013	62.8204917907715
2014	64.7072219848633
2015	65.9971771240234
2016	66.4412307739258
2017	67.5691986083984
2018	68.3780670166016
2019	69.4169387817383
2020	69.5092926025391
2021	71.7076721191406
2022	71.8753128051758