Year	% gross
1976	51.124568939209
1989	87.7016296386719
1990	80.8678894042969
1991	84.619758605957
1992	86.3484420776367
1993	80.7764205932617
1994	83.3280181884766
1995	83.4256134033203
1996	81.2297973632812
1998	50.9491081237793
1999	51.2004013061523
2000	50.2032203674316
2002	49.6877784729004
2007	53.9203605651855
2008	54.3263092041016
2009	53.6919403076172
2010	52.7661895751953
2011	54.1157188415527
2012	54.567569732666
2013	56.1251182556152
2014	57.0535697937012
2015	56.9434585571289
2016	58.803150177002
2017	59.7416687011719
2018	58.9100914001465
2019	62.0522499084473
2020	63.1068496704102
2021	65.5147018432617