Year	% gross
1980	47.7907981872559
1981	51.5102005004883
1982	51.6024894714355
1983	55.2735404968262
1984	57.3820495605469
1985	58.1353912353516
1986	61.9156112670898
1987	60.8381385803223
1988	58.9080009460449
1989	59.9751091003418
1990	60.0721397399902
1991	63.8696517944336
1992	64.871208190918
1993	65.7456512451172
1994	66.7385635375977
1995	67.7339477539063
1996	70.2049713134766
1997	67.8796310424805
1998	65.6227569580078
1999	63.3073310852051
2000	60.8973007202148
2001	63.777229309082
2002	66.6893997192383
2003	64.6607284545898
2004	62.7066192626953
2005	68.3919677734375
2006	61.4368705749512
2007	60.3299407958984
2008	59.2559509277344
2009	58.874698638916
2010	61.6211395263672
2011	64.3846206665039
2012	67.110107421875
2013	69.7780914306641
2014	64.1375427246094
2015	69.4542465209961
2016	69.7709503173828
2017	70.9603576660156
2018	70.5145568847656
2019	69.3198089599609
2020	70.4279022216797