Year	% gross
1973	4.11137008666992
1974	4.34096002578735
1975	4.58387994766235
1976	4.99641990661621
1977	5.16735982894897
1978	5.64628982543945
1979	6.43907022476196
1980	7.24156999588013
1981	7.94695997238159
1982	8.11987972259521
1983	8.00181007385254
1984	8.00527954101562
1985	8.02311038970947
1986	8.49901962280273
1987	8.90625
1988	8.81725978851318
1989	8.86608982086182
1990	8.83975028991699
1991	8.82339954376221
1992	8.90351963043213
1993	9.6496000289917
1994	10.9934902191162
1995	12.207070350647
1996	13.386360168457
1997	14.8672103881836
1998	15.4509496688843
1999	16.1681499481201
2000	16.8332004547119
2001	18.0172500610352
2002	19.5179805755615
2003	21.3674392700195
2004	22.8192596435547
2005	24.0668907165527
2006	24.9608097076416
2007	25.4057102203369
2008	25.8785305023193
2009	26.835880279541
2010	28.3454093933105
2011	29.6782398223877
2012	31.3900394439697
2013	33.447208404541
2014	39.7017097473145
2015	41.7641906738281
2016	42.9682197570801
2017	43.5091209411621
2018	44.1852607727051
2019	45.957691192627
2020	49.1984786987305
2021	52.4980316162109
2022	55.4176712036133