Year	% gross
1970	4.19638013839722
1972	3.90132999420166
1976	3.72715997695923
1982	5.28869009017944
1983	5.49525022506714
1984	7.27609014511108
1985	8.18875026702881
1993	11.3035697937012
1995	13.886269569397
1996	14.9205503463745
1999	16.0121402740479
2000	15.7184200286865
2001	15.9681100845337
2002	15.6944103240967
2003	17.4696998596191
2004	17.9362106323242
2006	17.462610244751
2007	17.6026401519775
2008	21.3310508728027
2009	23.1524906158447
2010	24.7478694915771
2011	26.7422103881836
2012	28.3287601470947
2013	28.3118896484375
2014	28.4416007995605
2015	31.0060195922852
2016	33.0921287536621
2017	34.0581398010254
2018	34.1368598937988
2019	35.7709999084473
2020	35.9970016479492
2021	37.6990013122559
2022	38.50830078125
