Year	% gross
1970	1.41716003417969
1971	1.4472199678421
1972	1.48670995235443
1973	1.494500041008
1974	1.51093995571136
1975	1.54402005672455
1976	1.57516002655029
1977	1.70080995559692
1978	1.78469002246857
1979	1.9306800365448
1980	2.01426005363464
1981	2.11882996559143
1982	2.28053998947144
1983	2.30970001220703
1984	2.35915994644165
1985	2.41606998443604
1986	2.43465995788574
1987	2.51345992088318
1988	2.4754900932312
1989	2.46555995941162
1990	2.54202008247375
1991	2.53308010101318
1992	2.51371002197266
1993	2.65671992301941
1994	2.70295000076294
1995	2.7989399433136
1996	2.94649004936218
1997	3.09924006462097
1998	3.27812004089355
1999	3.50062990188599
2000	3.80440998077393
2001	4.17710018157959
2002	4.3471097946167
2003	4.49318981170654
2004	4.708740234375
2005	5.16073989868164
2006	5.46294021606445
2007	5.75585985183716
2008	6.11483001708984
2009	6.74263000488281
2010	7.32754993438721
2011	7.74814987182617
2012	8.22690010070801
2013	8.59745979309082
2014	8.8863000869751
2015	9.0155200958252
2016	9.09562015533447
2017	9.27138042449951
2018	9.56923961639404
2019	10.4758100509644
2020	10.8082103729248
2021	11.0216903686523
2022	11.1975603103638