Year	% gross
1971	24.7905693054199
1972	23.9438800811768
1973	24.5064506530762
1974	24.8938102722168
1975	27.8323707580566
1976	28.3989601135254
1977	29.4955005645752
1978	28.6412792205811
1979	29.0726795196533
1980	28.2832202911377
1981	27.4311504364014
1982	26.3301105499268
1983	26.586799621582
1984	25.4183292388916
1985	26.3340606689453
1986	26.5811290740967
1987	27.1701393127441
1988	25.0346508026123
1989	24.0484104156494
1990	24.1053009033203
1992	34.1695289611816
1993	37.1427688598633
1994	41.1177597045898
1995	36.6489410400391
1996	41.3529205322266
1997	45.5210914611816
1998	44.5069313049316
1999	45.4948616027832
2000	49.8292083740234
2001	55.2779502868652
2002	61.7193717956543
2003	67.6153411865234
2004	73.765998840332
2005	83.9829177856445
2006	88.580207824707
2007	85.3338394165039
2010	100.724311828613
2011	107.078758239746
2012	111.20142364502
2013	113.484077453613
2014	116.977256774902
2016	125.709358215332
2017	130.637771606445
2018	136.096252441406
2019	137.996597290039
2020	138.336502075195
2021	144.787887573242