Year	% gross
1999	64.7104873657227
2002	63.4666709899902
2007	45.7405014038086
2008	46.2468185424805
2009	44.0625
2011	45.3232917785645
2015	39.3094291687012
2016	36.5410499572754
2019	87.2191009521484
2020	62.517879486084
2021	68.228401184082