Year	% gross
1978	0.397529989480972
1985	1.70657002925873
1986	2.63443994522095
1987	3.01895999908447
1988	2.93261003494263
1989	3.05206990242004
1990	3.00443005561829
1991	2.68005990982056
1992	2.85058999061584
1993	3.44337010383606
1994	3.40635991096497
1995	3.3408100605011
1996	3.60880994796753
1997	3.88223004341125
1998	3.79063010215759
1999	4.07405996322632
2001	3.3758499622345
2002	2.99132990837097
2003	3.19520998001099
2004	3.24557995796204
2005	2.99489998817444
2006	3.39830994606018
2007	3.85626006126404
2008	3.97535991668701
2009	4.04735994338989
2010	4.60102987289429
2011	5.01435995101929
2012	5.45682001113892
2013	5.78322982788086
2015	5.87037992477417
2016	5.5491099357605
2017	5.14321994781494
2018	5.11879014968872
2019	5.8698902130127
2020	5.95125007629395