Year	% gross
1971	77.4137878417969
1972	78.4039077758789
1973	81.7357330322266
1974	81.2151489257812
1975	81.9049530029297
1976	81.4225692749023
1977	83.98291015625
1978	80.2269134521484
1979	80.0406723022461
1980	81.3297729492188
1981	82.5833969116211
1982	83.4153823852539
1983	85.4773101806641
1984	87.3256225585938
1985	87.4147262573242
1986	89.602897644043
1987	87.5405502319336
1988	89.069221496582
1989	92.2303009033203
1990	91.6484298706055
1991	91.3023223876953
1992	91.7919235229492
1993	93.3966522216797
1994	94.3418807983398
1995	93.6837615966797
1996	93.1708984375
1997	92.8254776000977
1998	91.3076171875
1999	91.824577331543
2000	93.3239517211914
2001	98.9954681396484
2002	98.0657272338867
2003	106.22322845459
2007	114.114318847656
2008	114.626556396484
2009	113.051681518555
2010	112.527946472168
2011	109.708000183105
2012	111.775573730469
2013	106.096000671387
2014	103.556999206543
2015	104.22200012207
2016	103.74299621582
2017	101.887001037598
2018	101.097999572754
2019	99.5039978027344
2020	101.291000366211
2021	102.31600189209
2022	111.083999633789
2023	112.03099822998