Year	% gross
1981	22.2222194671631
1986	23.9389991760254
1991	21.0690002441406
1992	19.7824802398682
1993	18.3025302886963
1994	17.8390293121338
1995	20.73464012146
1996	19.6435508728027
1997	18.6777191162109
1998	18.3811893463135
1999	19.0538196563721
2000	19.8411197662354
2001	21.6105098724365
2002	23.1741600036621
2003	24.6700096130371
2004	25.3368091583252
2005	26.2348308563232
2006	27.2137908935547
2007	26.1121101379395
2008	24.026309967041
2009	23.4403896331787
2010	25.9862499237061
2011	26.9152603149414
2012	24.9830093383789
2013	25.5487804412842
2014	22.7179698944092
2015	23.7171592712402
2016	22.6507606506348
2017	35.9730606079102
2018	39.9036483764648
2019	38.9917907714844
2020	44.9263305664063
2021	46.3532295227051