Year	% gross
1970	1.83012998104095
1971	1.83247005939484
1972	1.8614000082016
1973	1.88768005371094
1974	1.95048999786377
1975	1.99505996704102
1976	2.02551007270813
1977	2.05232000350952
1978	2.12987995147705
1979	2.17006993293762
1980	2.22383999824524
1981	2.25886988639832
1982	2.35362005233765
1983	2.37891006469727
1984	2.47049999237061
1985	2.57978010177612
1986	2.71320009231567
1987	2.83267998695374
1988	2.94925999641418
1989	3.10331010818481
1990	3.13509011268616
1991	3.25391006469727
1992	3.35310006141663
1993	3.5731999874115
1994	3.76291990280151
1995	3.68391990661621
1996	3.63452005386353
1997	3.60538005828857
1998	3.59977006912231
1999	3.65201997756958
2000	3.886470079422
2001	4.2094202041626
2002	4.46935987472534
2003	4.77488994598389
2004	5.05759000778198
2005	5.29736995697021
2006	5.57156991958618
2007	5.73356008529663
2008	6.14764976501465
2009	6.74424982070923
2010	7.3374400138855
2011	7.72468996047974
2012	8.03289985656738
2013	8.29008007049561
2014	8.39443969726562
2015	8.55912971496582
2016	8.71965026855469
2017	8.85848999023438
2018	8.89824962615967
2019	8.80928993225098
2020	9.23036003112793
2021	8.85052013397217