Year	% gross
1981	18.2686100006104
1986	19.546070098877
1991	17.3743896484375
1992	16.2829494476318
1993	15.0339803695679
1994	14.9899597167969
1995	17.3372001647949
1996	16.6872806549072
1997	15.8059301376343
1998	15.2591495513916
1999	17.0242595672607
2000	18.7240295410156
2001	20.2068901062012
2002	21.573860168457
2003	22.2225894927979
2004	22.8707103729248
2005	24.6643295288086
2006	26.2542991638184
2007	25.9951992034912
2008	24.3113307952881
2009	23.634729385376
2010	25.1221008300781
2011	26.1494102478027
2012	24.6957492828369
2013	25.9546794891357
2014	23.5578708648682
2015	24.0608997344971
2016	22.8368301391602
2017	35.9880294799805
2018	39.4916610717773
2019	43.5990791320801
2020	44.4100914001465
2021	46.2174301147461