Year	% gross
1982	16.8013496398926
1987	38.042308807373
1991	43.459300994873
2004	93.5453262329102
2009	84.3553009033203
2013	81.854606628418
2014	71.7280502319336
2015	101.202651977539
2016	109.158416748047
2017	108.169532775879
2018	109.587379455566
2019	116.055320739746
2020	114.478530883789