Year	% gross
1970	15.9911203384399
1971	16.1141891479492
1972	18.1070995330811
1973	19.4594993591309
1974	20.795690536499
1975	22.5454807281494
1976	24.6918296813965
1977	26.9090995788574
1978	28.7269992828369
1979	30.1761703491211
1980	31.3319206237793
1981	32.45166015625
1982	33.9593696594238
1983	35.1192817687988
1984	36.3032913208008
1985	37.6933288574219
1986	39.7854881286621
1987	41.1139717102051
1988	41.9832611083984
1989	43.3968200683594
1990	46.9209403991699
1991	47.9577789306641
1992	48.2688903808594
1993	50.1297187805176
1994	52.8686714172363
1995	53.9370384216309
1996	54.5505294799805
1997	56.5720596313477
1998	58.785270690918
1999	60.9345207214355
2000	62.4426002502441
2001	63.6694412231445
2002	64.7151031494141
2003	65.9833221435547
2004	67.0647888183594
2005	66.9120788574219
2006	67.3118896484375
2007	66.4723205566406
2008	66.9500503540039
2009	68.3402404785156
2010	69.0271530151367
2011	72.3589782714844
2012	73.0888137817383
2013	70.5167007446289
2014	71.0147933959961
2015	70.8521423339844
2016	71.0785675048828
2017	71.1517028808594
2018	71.5771636962891
2019	72.1945190429688
2020	72.989013671875
2021	73.8628997802734
2022	74.4255599975586