Year	% gross
1971	8.88973999023438
1972	9.53090000152588
1978	10.6888999938965
1979	10.1460304260254
1980	10.3493604660034
1981	10.9535999298096
1982	11.5333995819092
1983	11.8150300979614
1984	11.7839298248291
1985	12.1575002670288
1986	13.1106700897217
1987	13.2917499542236
1988	13.6110696792603
1989	14.5047397613525
1990	14.8413496017456
1992	15.1803197860718
1996	14.4969396591187
1997	14.2933301925659
1998	14.2297401428223
1999	15.0402202606201
2000	15.6458702087402
2001	15.9723300933838
2002	17.3591995239258
2004	20.29953956604
2005	22.5061092376709
2006	24.3925895690918
2008	30.725269317627
2010	36.9725303649902
2011	42.3821296691895
2012	46.180419921875
2013	48.8453712463379
2014	50.8017616271973
2015	51.2827301025391
2019	45.9415283203125
2020	46.3485488891602
2021	46.8130683898926
2022	46.9506912231445