Year	% gross
1972	1.32671999931335
1973	1.41583001613617
1977	2.58439993858337
1979	3.72937989234924
1992	5.18536996841431
1993	6.62976980209351
1995	6.96073007583618
1998	9.05171966552734
2007	12.8842601776123
2011	16.6563892364502
2012	15.3964395523071
2018	24.3937091827393
