Year	% gross
1971	65.3507080078125
1972	71.5773391723633
1973	75.3503494262695
1974	79.3748016357422
1975	81.7691192626953
1976	84.7714080810547
1977	85.5186386108398
1978	85.2615737915039
1979	83.5762481689453
1980	84.1031875610352
1981	83.6606597900391
1982	86.3305587768555
1983	82.3672409057617
1984	85.7886199951172
1985	87.092041015625
1986	88.818603515625
1987	91.6406326293945
1988	92.3201370239258
1989	93.6129608154297
1990	93.3909378051758
1991	93.9916610717773
1992	95.3132781982422
1993	91.6351013183594
1994	92.5940475463867
1995	92.2231674194336
1996	92.3437728881836
1997	92.159782409668
1998	92.8656692504883
1999	93.4335708618164
2000	92.9932632446289
2001	97.025016784668
2002	102.428352355957
2003	100.635231018066
2004	100.730323791504
2005	105.649871826172
2006	105.895767211914
2007	104.415061950684
2010	111.300407409668
2011	108.18115234375
2012	108.128898620605
2013	107.687286376953
2014	103.171546936035
2015	102.227676391602
2016	102.064727783203
2017	102.704193115234
2018	102.791946411133
2019	106.377738952637
2020	104.299583435059
2021	105.525001525879