Year	% gross
1971	57.2362594604492
1972	62.6481285095215
1973	68.0945434570312
1974	72.6565322875977
1975	76.0633926391602
1976	78.2180633544922
1977	78.5878524780273
1978	79.7965316772461
1979	80.4846115112305
1980	81.0750579833984
1981	80.7488021850586
1982	80.2796401977539
1983	80.5330581665039
1984	81.3625411987305
1985	81.9344100952148
1986	82.2967910766602
1987	84.1484298706055
1988	85.7401885986328
1989	85.5340194702148
1990	85.3192367553711
1991	86.2808609008789
1992	87.8664932250977
1993	88.3296203613281
1994	89.5673675537109
1995	90.3769226074219
1996	92.4397201538086
1997	95.8432693481445
1998	99.3752975463867
1999	102.335891723633
2000	105.581451416016
2001	104.845008850098
2002	106.826217651367
2003	107.560409545898
2004	108.185470581055
2005	108.472480773926
2006	108.128982543945
2007	108.952537536621
2008	107.61213684082
2009	109.033599853516
2010	109.675926208496
2011	108.885208129883
2012	108.711959838867
2013	109.558349609375
2014	109.204490661621
2015	108.461013793945
2016	108.132461547852
2017	107.329010009766
2018	106.400611877441
2019	105.613136291504
2020	108.705551147461
2021	105.373756408691
2022	106.864898681641
2023	107.688026428223