Year	% gross
1970	6.5019998550415
1971	6.51964998245239
1972	6.58846998214722
1973	6.71745014190674
1974	6.90715980529785
1975	7.17201995849609
1976	7.47086000442505
1977	7.56868982315063
1978	7.78854990005493
1979	8.22682952880859
1980	8.60058975219727
1981	8.97795009613037
1982	8.88875961303711
1983	8.97043991088867
1984	9.05601024627686
1985	9.04220008850098
1986	9.34823989868164
1987	9.5510196685791
1988	9.29339027404785
1989	9.3260498046875
1990	9.34566974639893
1991	9.33936977386475
1992	9.29594039916992
1993	9.36448001861572
1994	9.83298969268799
1995	10.2832002639771
1996	11.0152597427368
1997	11.669150352478
1998	12.3353300094604
1999	13.061240196228
2000	13.8093500137329
2001	14.6821002960205
2002	15.66090965271
2003	16.8197002410889
2004	17.6687202453613
2005	18.3928699493408
2006	19.3133602142334
2007	20.2770195007324
2008	21.3466606140137
2009	22.2531108856201
2010	23.589750289917
2011	25.2740707397461
2012	26.2707405090332
2013	26.8241291046143
2014	29.2563209533691
2015	30.3944606781006
2016	30.7794704437256
2017	31.0991992950439
2018	31.3537502288818
2019	31.9687194824219
2020	32.9884185791016
2021	34.3291091918945
2022	35.4027786254883