Year	% gross
1970	51.2883415222168
1971	55.5205688476562
1972	60.1794700622559
1973	58.0448303222656
1974	59.3782806396484
1975	60.3268203735352
1976	64.6486968994141
1977	62.998649597168
1978	59.6776885986328
1979	58.4831008911133
1980	61.5179214477539
1981	60.1830787658691
1982	61.7654113769531
1983	69.3680267333984
1986	72.2121963500977
1990	79.5410003662109
1991	79.9221267700195
1992	84.4440536499023
1993	88.7131118774414
1994	92.3499069213867
1999	81.9158401489258
2000	78.9848098754883
2002	88.9557113647461
2005	95.3578720092773
2006	101.07022857666
2007	102.39395904541
2010	112.618087768555
2011	113.754501342773
2012	111.62557220459
2013	113.24382019043
2014	111.425498962402
2015	112.352226257324
2016	112.831848144531
2017	111.576652526855
2018	105.987548828125
2019	104.872749328613