Year	% gross
1971	59.9352416992188
1972	60.8704299926758
1973	64.0004425048828
1974	63.6632995605469
1975	64.3427505493164
1976	64.269660949707
1977	66.4639434814453
1978	62.8619918823242
1979	63.5055084228516
1980	64.7634963989258
1981	66.1718521118164
1982	66.8451080322266
1983	69.0309219360352
1984	70.7665023803711
1985	71.8255310058594
1986	74.9700927734375
1987	74.0835113525391
1988	75.7292098999023
1989	77.4167022705078
1990	77.6354064941406
1991	78.6996307373047
1992	79.7042694091797
1993	82.8754806518555
1994	84.2126922607422
1995	83.6763534545898
1996	83.7161026000977
1997	83.8222274780273
1998	82.6979293823242
1999	83.2283325195312
2000	84.8367309570312
2001	90.5067596435547
2002	90.64990234375
2003	104.230758666992
2007	112.775062561035
2008	114.912536621094
2009	114.035369873047
2010	113.240608215332
2011	110.727996826172
2012	112.460273742676
2013	107.514999389648
2014	104.637001037598
2015	105.305000305176
2016	104.83699798584
2017	102.546997070312
2018	101.59700012207
2019	99.9100036621094
2020	101.667999267578
2021	102.460998535156
2022	110.846000671387
2023	111.432998657227