Year	% gross
1971	5.45269012451172
1998	13.0406103134155
1999	12.4387302398682
2000	13.5385799407959
2001	15.201379776001
2002	18.569580078125
2003	22.41090965271
2004	26.1581192016602
2006	35.7334098815918
2007	39.3309288024902
2008	42.7803993225098
2017	51.4490013122559
2018	54.3050003051758
2019	55.8520011901855
2020	57.4904289245605
2021	63.007999420166