Year	% gross
1970	2.88857007026672
1971	2.95653009414673
1972	3.03281998634338
1973	3.06414008140564
1974	3.16782999038696
1975	3.15579009056091
1976	3.17307996749878
1977	3.3822500705719
1978	3.47969007492065
1979	3.93181991577148
1980	4.03985023498535
1981	4.22931003570557
1982	4.39897012710571
1983	4.67034006118774
1984	4.83850002288818
1985	4.93703985214233
1986	5.01528978347778
1987	4.96494007110596
1988	5.0432300567627
1989	5.06348991394043
1990	5.1434497833252
1991	5.14342021942139
1992	5.05459022521973
1993	5.10601997375488
1994	5.05802011489868
1995	5.04946994781494
1996	5.10374021530151
1997	5.14240980148315
1998	5.23101997375488
1999	5.34375
2000	5.66004991531372
2001	6.14569997787476
2002	6.38896989822388
2003	6.63711023330688
2004	6.88101005554199
2005	7.35433006286621
2006	7.72310018539429
2007	8.1713695526123
2008	8.66783046722412
2009	9.41720962524414
2010	10.1088104248047
2011	10.5743799209595
2012	10.976770401001
2013	11.3274803161621
2014	11.5538101196289
2015	11.8798398971558
2016	11.9741296768188
2017	12.1384801864624
2018	12.3693399429321
2019	13.1142997741699
2020	13.2402801513672
2021	13.3453598022461
2022	13.4193801879883