Year	% gross
1970	26.1810894012451
1971	27.7996997833252
1972	29.818000793457
1973	31.5930500030518
1974	32.6295204162598
1975	33.154598236084
1976	33.9747505187988
1977	35.0754013061523
1978	35.4249687194824
1979	34.4544486999512
1980	32.9110107421875
1981	32.1146697998047
1982	31.5949993133545
1983	32.0403900146484
1984	32.2187118530273
1985	33.3103408813477
1986	34.4082412719727
1987	35.7074584960938
1988	36.5403289794922
1989	37.1018600463867
1990	37.9398803710938
1991	39.3238792419434
1992	40.7198905944824
1993	41.923828125
1994	42.9535293579102
1995	44.0175514221191
1996	45.2691116333008
1997	46.5654296875
1998	47.690071105957
1999	48.5896987915039
2000	49.7824897766113
2001	51.1038703918457
2002	53.4683990478516
2003	54.8537483215332
2004	56.1207084655762
2005	57.3953018188477
2006	58.1402702331543
2007	60.3313102722168
2008	62.216121673584
2009	63.7463798522949
2010	65.2505722045898
2011	66.8002471923828
2012	67.8598480224609
2013	69.5733184814453
2014	70.6521682739258
2015	70.6349792480469
2016	70.8975982666016
2017	70.4992218017578
2018	71.2820892333984
2019	71.6765899658203
2020	72.2348937988281
2021	72.835823059082
2022	73.3420715332031