Year	% gross
1971	2.11991000175476
1973	2.19590997695923
1976	2.42529988288879
1977	2.483069896698
1978	2.55899000167847
1979	2.64526009559631
1980	2.63238000869751
1981	2.85027003288269
1982	2.83267998695374
1983	3.17833995819092
1984	3.35595989227295
1985	3.51619005203247
1986	3.68688011169434
1987	3.87203001976013
1988	3.57248997688293
1989	3.7409200668335
1990	3.94944000244141
1991	4.07982015609741
1995	3.89196991920471
1996	4.62621021270752
1997	4.87909984588623
2000	7.45066976547241
2001	8.38576984405518
2002	8.79872989654541
2003	9.04621982574463
2004	9.24853992462158
2005	9.30636978149414
2006	10.1083402633667
2007	11.2898597717285
2009	13.7902698516846
2010	15.6030702590942
2011	20.7719993591309
2013	23.3040008544922
2014	25.4990005493164
2015	26.8819999694824
2016	27.0960006713867
2017	28.1060009002686
2018	29.1420001983643
2019	30.2730007171631
2020	31.2569999694824
2021	32.3860015869141
2022	33.2540016174316
2023	32.8089981079102