Year	% gross
1972	37.258228302002
1973	41.0586204528809
1974	46.4508590698242
1975	51.5021286010742
1976	53.1881713867188
1977	53.6145095825195
1978	52.9039611816406
1979	53.5083694458008
1980	56.5792388916016
1981	57.2385787963867
1982	60.619701385498
1983	57.2701797485352
1984	52.8111610412598
1985	53.9898300170898
1986	54.903678894043
1987	57.5787887573242
1988	57.3602294921875
1989	61.9184989929199
1990	64.9703826904297
1991	66.5964279174805
1992	79.0293807983398
1993	86.4562683105469
1994	95.6646575927734
1995	143.594177246094
1996	143.084655761719
1999	138.12873840332
2000	140.836181640625
2001	145.368453979492
2002	141.582061767578
2004	137.357604980469
2005	134.38134765625
2006	133.783264160156
2007	129.886123657227
2008	135.905319213867
2009	133.08708190918
2010	135.11181640625
2011	135.699066162109
2012	134.736679077148
2013	138.564117431641
2014	138.596740722656
2015	137.99821472168
2016	137.291275024414
2017	139.546997070312
2018	135.947769165039
2019	140.14387512207
2021	129.807006835938
2022	128.649993896484