Year	% gross
1974	44.3804016113281
1975	47.6333885192871
1976	45.1598815917969
1977	47.656608581543
1979	57.7708015441895
1990	70.1884307861328
1991	74.5231628417969
1992	68.1200866699219
1999	71.2723083496094
2000	55.4070510864258
2001	71.9773330688477
2002	73.1190185546875
2003	64.2694931030273
2004	73.4401321411133
2005	92.6279296875
2006	91.5750885009766
2007	89.1013412475586
2008	100.990097045898
2009	97.5485229492188
2010	102.139038085938
2011	97.5770874023438
2012	95.2591018676758
2013	107.557502746582
2014	94.1304321289063
2015	95.7541885375977
2016	94.2437896728516
2019	83.1603164672852
2020	72.982063293457
2021	66.48291015625