Year	% gross
1970	5.74978017807007
1971	6.48776006698608
1972	7.30916976928711
1973	8.27600002288818
1974	9.58646965026855
1975	10.9595804214478
1976	11.3415098190308
1977	11.504810333252
1978	11.8282403945923
1979	12.4294395446777
1980	12.9178304672241
1981	13.3916301727295
1982	13.5520095825195
1983	13.814510345459
1984	14.2471504211426
1985	14.8583698272705
1986	15.3079500198364
1987	15.6084203720093
1988	16.0160598754883
1989	15.9718198776245
1990	15.8073797225952
1991	16.0735301971436
1992	15.8955602645874
1993	15.6944904327393
1994	15.8572597503662
1995	16.271240234375
1996	16.8642997741699
1997	17.8560199737549
1998	19.3769702911377
1999	20.7677097320557
2000	22.0384407043457
2001	23.2177696228027
2002	24.8143005371094
2003	26.2756595611572
2004	27.6860694885254
2005	28.8725605010986
2006	31.867259979248
2007	32.723819732666
2008	35.3829689025879
2009	36.4436111450195
2010	37.9702301025391
2011	39.6106910705566
2012	41.2341918945312
2013	42.2268104553223
2014	43.9319114685059
2015	45.2709884643555
2016	47.4125213623047
2017	48.9049110412598
2018	49.7014083862305
2019	50.7692413330078
2020	52.4896202087402
2021	54.2470817565918
2022	54.2429084777832