Year	% gross
1970	2.98974990844727
1971	3.06986999511719
1972	3.20981001853943
1973	3.36925005912781
1974	3.55417990684509
1975	3.77607989311218
1976	3.95517992973328
1977	4.07510995864868
1978	4.32581996917725
1979	4.613609790802
1980	4.81806993484497
1981	5.17544984817505
1982	5.34751987457275
1983	5.69043016433716
1984	6.12026977539062
1985	6.41534996032715
1986	6.54063987731934
1987	6.81064987182617
1988	6.78885984420776
1989	7.04802989959717
1990	7.20095014572144
1991	7.49918985366821
1992	7.62032985687256
1993	7.8358998298645
1994	8.15478992462158
1995	8.44672012329102
1996	9.06009960174561
1997	9.63634967803955
1998	10.5124502182007
1999	11.5174703598022
2000	12.1442699432373
2001	12.4333696365356
2002	13.1098604202271
2003	13.4968795776367
2004	13.8351802825928
2005	14.3744096755981
2006	15.3213500976562
2007	16.4693603515625
2008	18.0626602172852
2009	19.0701999664307
2010	20.5539398193359
2011	23.1541004180908
2012	25.2442493438721
2013	26.2380409240723
2014	27.8190097808838
2015	29.2887001037598
2016	30.2840404510498
2017	31.0067291259766
2018	31.6067295074463
2019	32.908748626709
2020	33.8217391967773
2021	35.1057815551758
2022	35.4827003479004