Year	% gross
1970	5.08258008956909
1974	7.51150989532471
1975	7.71440982818604
1976	7.55825996398926
1977	7.23006010055542
1984	9.1951904296875
1986	9.35659980773926
1987	9.71490955352783
1988	10.0161199569702
1989	10.3737802505493
1990	10.5358600616455
1991	10.9221496582031
1992	10.7178001403809
1993	11.7059803009033
1994	12.1755104064941
1995	11.0353803634644
1998	16.9568405151367
2012	32.6410903930664
2018	40.085090637207