Year	% gross
1971	5.08661985397339
1972	5.51455020904541
1973	6.13108015060425
1974	6.61730003356934
1975	6.90788984298706
1976	7.26394987106323
1977	7.58863019943237
1978	7.8214898109436
1984	11.3245496749878
1985	12.0418796539307
1988	12.9195203781128
1989	11.016619682312
1990	11.1925601959229
1991	11.2750797271729
2001	20.7053298950195
2011	34.0057182312012
2012	40.3962287902832
2013	35.8630905151367
2015	36.4362411499023
2016	39.5467910766602
2017	39.8111000061035
2018	41.1341285705566
2019	58.9350395202637
2020	60.8118286132812
2021	71.9623336791992