Year	% gross
1970	39.9944000244141
1971	40.0247611999512
1972	40.6718406677246
1973	41.6980400085449
1974	42.6637992858887
1975	43.7446708679199
1976	45.1526908874512
1977	47.1578216552734
1978	47.8750991821289
1979	48.7298393249512
1980	50.6635589599609
1981	52.2247085571289
1982	52.9210510253906
1983	52.816291809082
1984	53.258171081543
1985	52.1886787414551
1986	52.583610534668
1987	52.6294288635254
1988	52.5121612548828
1989	51.5228385925293
1990	50.1408004760742
1991	52.1027984619141
1992	50.9450492858887
1993	51.0809097290039
1994	52.0858116149902
1995	53.7062110900879
1996	53.5505218505859
1997	57.9249687194824
1998	58.7621917724609
1999	59.288158416748
2000	61.8358497619629
2001	64.8835525512695
2002	69.5889205932617
2003	73.2063827514648
2004	75.424072265625
2005	79.858268737793
2006	83.3167037963867
2007	85.8762512207031
2008	90.6457366943359
2009	92.0132827758789
2010	92.186408996582
2011	92.4626693725586
2012	93.6626586914062
2013	93.5129699707031
2014	93.5988235473633
2015	93.172981262207
2016	94.1549530029297
2017	94.7322311401367
2018	95.4701309204102
2019	96.6015930175781
2020	97.632942199707
2021	96.8047790527344
2022	96.8374710083008