Year	% gross
1970	78.987190246582
1971	79.456787109375
1972	79.8657989501953
1973	79.5839233398438
1974	79.165657043457
1975	80.3014297485352
1976	81.1066665649414
1977	80.2283782958984
1979	80.3381423950195
1980	80.6672286987305
1981	81.1823425292969
1982	81.2202835083008
1983	83.3720321655273
1984	82.924201965332
1985	81.607551574707
1986	81.3381881713867
1987	81.6534805297852
1988	83.7138900756836
1989	85.725456237793
1990	88.7833786010742
1991	90.8639907836914
1992	94.5853271484375
1993	102.145393371582
1994	108.558731079102
1995	114.482162475586
1996	112.020896911621
1997	111.330467224121
1998	109.710357666016
1999	110.11222076416
2000	108.996047973633
2002	109.636177062988
2003	111.887237548828
2004	112.155158996582
2005	116.469100952148
2006	115.733779907227
2007	118.746612548828
2008	115.974838256836
2009	124.676528930664
2010	116.789428710938
2011	115.441619873047
2012	113.761749267578
2013	112.239692687988
2014	112.915649414062
2015	111.852188110352
2016	110.299880981445
2017	109.358367919922
2018	108.808723449707
2019	116.779190063477
2020	113.679588317871
2021	114.698020935059