Year	% gross
1970	64.6411666870117
1971	59.596549987793
1972	62.6325302124023
1973	63.5152587890625
1974	65.2824478149414
1975	65.7077789306641
1976	65.3263473510742
1977	64.3412094116211
1978	57.9029197692871
1979	56.1580696105957
1981	110.050483703613
1982	118.189659118652
1983	122.680206298828
1984	121.716728210449
1985	122.4453125
1986	121.749847412109
1987	115.05200958252
1988	105.389739990234
1989	100.10758972168
1990	91.7735977172852
1991	94.6745681762695
1992	93.8072814941406
1995	97.5940093994141
1996	99.929443359375
1998	104.132553100586
1999	105.288780212402
2000	107.309867858887
2001	112.637969970703
2002	108.15991973877
2003	106.880310058594
2012	101.13533782959
2013	100.414878845215
2014	99.6449966430664
2015	98.7963409423828
2016	97.6276931762695
2017	96.7282867431641
2018	96.4290390014648
2019	96.2859268188477
2020	96.6419677734375
2021	95.4680023193359
2022	95.3889999389648