Year	% gross
1970	3.20660996437073
1971	3.29994988441467
1972	3.18799996376038
1973	3.22908997535706
1974	3.25086998939514
1975	3.23487997055054
1976	3.37704992294312
1977	3.47294998168945
1978	3.63019990921021
1979	3.89602994918823
1980	3.99694991111755
1981	4.27066993713379
1982	4.53292989730835
1983	4.66019010543823
1984	4.8250298500061
1985	5.09534978866577
1986	5.24600982666016
1987	5.24037981033325
1988	5.77101993560791
1989	5.88670015335083
1990	5.90525007247925
1991	5.79262018203735
1992	5.61960983276367
1993	5.63597011566162
1994	5.61499977111816
1995	5.58774995803833
1996	5.52572011947632
1997	5.46741008758545
1998	5.39934015274048
1999	5.33218002319336
2000	5.67546987533569
2001	6.03950977325439
2002	6.41412019729614
2003	6.784019947052
2004	7.1288800239563
2005	7.68157005310059
2006	7.72293996810913
2007	7.930419921875
2008	7.89616012573242
2009	8.41046047210693
2010	8.75321960449219
2011	9.45359039306641
2012	9.97469997406006
2013	10.3034200668335
2014	10.3495597839355
2015	10.74534034729
2016	10.7686004638672
2017	11.0625400543213
2018	10.9031400680542
2019	12.0099897384644
2020	12.4520998001099
2021	12.9931802749634
2022	12.9579496383667