Year	% gross
1970	6.84656000137329
1971	6.89218997955322
1972	7.09183979034424
1973	7.36753988265991
1974	7.6121301651001
1975	7.90854978561401
1976	8.16580963134766
1977	8.13387966156006
1978	8.36338996887207
1979	8.57190990447998
1980	8.79726028442383
1981	9.15314960479736
1982	9.0590295791626
1983	9.62269020080566
1984	10.2527904510498
1985	10.3751201629639
1986	10.55006980896
1987	10.8081197738647
1988	10.2084398269653
1989	10.3845195770264
1990	10.4473495483398
1991	10.5306301116943
1992	10.5191898345947
1993	10.5533504486084
1994	10.7705698013306
1995	10.9334402084351
1996	11.6595497131348
1997	12.1258001327515
1998	12.6884098052979
1999	13.5292701721191
2000	14.0988998413086
2001	14.4607496261597
2002	14.7282199859619
2003	15.2613000869751
2004	15.7834596633911
2005	15.8431100845337
2006	16.5012702941895
2007	17.908130645752
2008	19.505880355835
2009	20.6672306060791
2010	22.4049396514893
2011	24.9148998260498
2012	25.8971691131592
2013	25.8714504241943
2014	26.886510848999
2015	28.333740234375
2016	28.9452991485596
2017	29.3293800354004
2018	29.4264297485352
2019	29.9248008728027
2020	30.3312702178955
2021	31.4019393920898
2022	32.1094818115234