Year	% gross
1973	11.1517601013184
1974	13.9470701217651
1975	18.1601009368896
1976	26.9905605316162
1977	30.5224609375
1978	33.9914093017578
1979	37.5975799560547
1980	43.4787292480469
1981	48.8028106689453
1982	54.5468101501465
1983	57.7797203063965
1984	61.7158889770508
1985	65.1846466064453
1986	67.6507873535156
1987	63.2472915649414
1988	61.9637908935547
1989	62.3193511962891
1990	64.0335998535156
1991	67.5845108032227
1992	70.3004837036133
1993	73.8748474121094
1994	78.9568176269531
1995	82.6393585205078
1997	76.4027709960938
1998	72.9367904663086
2016	102.814086914062
2017	117.712356567383
2019	121.723457336426
2020	120.51579284668