Year	% gross
1970	26.1214904785156
1971	26.1842403411865
1972	26.689790725708
1973	27.1116695404053
1974	27.3877201080322
1975	27.8127708435059
1976	28.1756591796875
1977	28.9123401641846
1978	29.54128074646
1979	30.3737907409668
1980	31.4645309448242
1981	32.1398506164551
1982	33.2836418151855
1983	34.8088684082031
1984	35.8423385620117
1985	36.5608596801758
1986	37.1412086486816
1987	37.3434600830078
1988	37.3471298217773
1989	37.5127105712891
1990	38.889591217041
1991	40.4115791320801
1992	41.8564987182617
1993	43.2125396728516
1994	43.951229095459
1995	44.241340637207
1996	44.4618186950684
1997	45.1290016174316
1998	44.8869400024414
1999	44.5956382751465
2000	45.8297691345215
2001	46.3972702026367
2002	47.6873893737793
2003	49.1015510559082
2004	50.1298713684082
2005	51.1917304992676
2006	51.9357490539551
2007	53.0820198059082
2008	54.9034690856934
2009	55.2570915222168
2010	57.5634117126465
2011	59.6214981079102
2012	61.432201385498
2013	62.2437286376953
2014	64.2811965942383
2015	64.5329666137695
2016	65.3251266479492
2017	64.5951919555664
2018	65.6517181396484
2019	66.0834197998047
2020	67.3463287353516
2021	68.6291275024414
2022	68.8714981079102