Year	% gross
1970	9.75452041625977
1971	9.83376026153564
1972	10.2828998565674
1973	10.7529697418213
1974	11.0973196029663
1975	11.8433103561401
1976	12.4537601470947
1977	13.0852499008179
1978	14.1707801818848
1979	15.3866300582886
1980	16.7687892913818
1981	18.1107406616211
1982	19.3068904876709
1983	20.3117599487305
1984	21.2960300445557
1985	21.7998504638672
1986	21.1208400726318
1987	21.0915107727051
1988	20.7602500915527
1989	20.153829574585
1990	20.1534099578857
1991	20.2908897399902
1992	20.3424606323242
1993	20.4381198883057
1994	20.7220191955566
1995	20.9918098449707
1996	20.9325103759766
1997	20.9164295196533
1998	21.3722190856934
1999	21.7301502227783
2000	22.5767498016357
2001	23.8262805938721
2002	24.8846702575684
2003	26.2420692443848
2004	28.035530090332
2005	28.8515796661377
2006	29.8427295684814
2007	30.3850002288818
2008	32.9565200805664
2009	35.1000900268555
2010	37.2103996276855
2011	38.2447814941406
2012	39.4033508300781
2013	42.1049613952637
2014	40.8091011047363
2015	41.394458770752
2016	40.9625587463379
2017	41.4318504333496
2018	41.8553695678711
2019	42.2964096069336
2020	42.938419342041
2021	43.2700805664062
2022	43.0672988891602