Year	% gross
1971	51.5569801330566
1972	59.6818313598633
1973	60.9188194274902
1974	62.4442710876465
1975	71.8139038085938
1976	75.9936218261719
1977	74.1933898925781
1978	73.9913482666016
1979	73.1525573730469
1980	76.5992202758789
1981	72.7560577392578
1982	76.9075698852539
1983	78.5323333740234
1984	79.2236862182617
1985	77.6871185302734
1986	75.5479965209961
1987	73.4245300292969
1988	74.0361862182617
1989	76.1379089355469
1990	79.3801574707031
1991	80.0885925292969
1992	84.2107772827148
1993	85.0861511230469
1994	85.7307510375977
1995	87.0653076171875
1996	86.0461120605469
1997	87.3026809692383
1998	88.2911911010742
1999	87.4703979492188
2000	91.4956817626953
2001	90.7193222045898
2002	91.1574630737305
2003	93.1107406616211
2004	104.41886138916
2005	101.806327819824
2006	97.5271606445312
2007	100.52220916748
2008	101.423049926758
2010	105.11385345459
2011	94.1126708984375
2012	95.5169982910156
2013	96.2600631713867
2014	96.2309799194336
2015	95.1571197509766
2016	94.9765701293945
2017	103.138412475586
2018	104.642509460449
2019	104.505729675293
2020	102.924011230469
2021	103.094459533691
2022	102.695037841797