Year	% gross
1971	13.67160987854
1972	14.2489099502563
1973	14.7687702178955
1974	15.7385997772217
1975	16.6340007781982
1977	30.3396396636963
1978	31.788200378418
1979	32.4005699157715
1980	32.8461685180664
1981	33.0140991210938
1982	33.202808380127
1983	33.3449897766113
1984	32.3086814880371
1985	32.4557991027832
1986	34.2192611694336
1987	35.5290298461914
1988	37.2314682006836
1989	39.8907012939453
1990	42.9835395812988
1991	46.964771270752
1992	50.4797286987305
1993	56.5201797485352
1994	59.8192291259766
1995	61.9128799438477
1996	63.6345405578613
1997	65.7504272460938
1998	69.8397064208984
1999	72.2018432617188
2000	74.8645935058594
2001	77.7016372680664
2002	77.9076690673828
2003	80.3263931274414
2004	82.1422882080078
2005	83.5468215942383
2006	84.1987380981445
2007	85.5179977416992
2008	85.8607788085938
2009	82.7340316772461
2010	84.0662536621094
2011	83.9303588867188
2012	82.9353179931641
2013	82.6903991699219
2014	81.6785278320312
2015	81.4824905395508
2016	81.5820922851562
2017	83.0272598266602
2018	84.5367584228516
2019	85.9393920898438
2020	86.2714462280273
2021	89.792236328125
2022	92.2595672607422