Year	% gross
1970	29.5031890869141
1971	31.55299949646
1972	34.110221862793
1973	36.3967018127441
1974	37.8774604797363
1975	38.4907989501953
1976	39.3200302124023
1977	40.333568572998
1978	40.3821792602539
1979	39.0001182556152
1980	36.8366508483887
1981	35.8410682678223
1982	34.955020904541
1983	35.3965606689453
1984	35.5506401062012
1985	36.7586517333984
1986	37.9503898620605
1987	39.4934310913086
1988	40.6296195983887
1989	41.5114593505859
1990	42.7641410827637
1991	44.4205513000488
1992	46.1557884216309
1993	47.7759895324707
1994	49.0984191894531
1995	50.2516593933105
1996	51.8262481689453
1997	53.4109001159668
1998	54.7248191833496
1999	55.7439002990723
2000	57.1472091674805
2001	58.6832313537598
2002	61.6691284179688
2003	63.2841987609863
2004	64.9854507446289
2005	66.7078704833984
2006	67.5544891357422
2007	70.6485137939453
2008	73.0346908569336
2009	74.950798034668
2010	76.7257080078125
2011	78.8487930297852
2012	80.1035385131836
2013	82.2056503295898
2014	84.1803588867188
2015	83.9381408691406
2016	84.3545684814453
2017	83.7780914306641
2018	84.5761413574219
2019	85.1442565917969
2020	85.9526214599609
2021	87.0982131958008
2022	88.1438903808594