Year	% gross
1999	38.1705513000488
2000	38.536678314209
2001	36.8517417907715
2002	35.3276481628418
2003	34.5856513977051
2004	38.4752616882324
2005	41.1689682006836
2006	48.7714385986328
2007	52.2373695373535
2008	52.511531829834
2009	50.8713798522949
2010	55.013500213623
2011	58.9866981506348
2012	60.8004608154297
2013	66.1035919189453
2014	47.2338714599609
2015	50.5601387023926
2016	50.3030700683594
2017	52.8692283630371
2018	55.0068283081055
2019	55.4412384033203
2020	56.2120895385742