Year	% gross
1970	30.2952995300293
1971	29.9301300048828
1972	29.5512294769287
1973	29.3946895599365
1974	29.3856506347656
1975	29.5548896789551
1976	29.9247398376465
1977	30.3560104370117
1978	30.4444198608398
1979	30.369270324707
1980	30.3430805206299
1981	30.4778594970703
1982	30.8068695068359
1983	31.3917007446289
1984	32.1185684204102
1985	33.0251884460449
1986	33.3998184204102
1987	33.1683197021484
1988	32.9768218994141
1989	32.7397384643555
1990	32.613468170166
1991	32.5078392028809
1992	31.8412303924561
1993	31.2017097473145
1994	31.1491298675537
1995	31.3441295623779
1996	32.473560333252
1997	33.892219543457
1998	34.7603302001953
1999	36.9566307067871
2000	39.433910369873
2001	42.6225891113281
2002	45.6347312927246
2003	48.6185302734375
2004	49.7175788879395
2005	51.8192291259766
2006	54.0075416564941
2007	55.8699684143066
2008	57.3897399902344
2009	58.790771484375
2010	60.4601287841797
2011	61.4273910522461
2012	62.2875900268555
2013	64.0747909545898
2014	65.728271484375
2015	67.0279312133789
2016	68.9676208496094
2017	70.8589782714844
2018	72.8620681762695
2019	74.5359802246094
2020	76.1234817504883
2021	78.3906021118164
2022	78.6692276000977