Year	% gross
1971	98.8854522705078
1972	98.486701965332
1973	98.7680206298828
1974	99.0540008544922
1975	99.6779937744141
1976	99.7555999755859
1977	98.7492065429688
1978	97.9208908081055
1979	97.2962493896484
1980	98.6602630615234
1981	100.443710327148
1982	102.277236938477
1983	103.783683776855
1984	105.093566894531
1985	105.627799987793
1986	105.371383666992
1987	91.1583099365234
1988	90.8596115112305
1989	89.9753875732422
1990	89.9256362915039
1991	92.6782913208008
1992	92.3167572021484
1993	93.1810989379883
1994	93.6358337402344
1995	94.7000427246094
1996	96.0178604125977
1997	99.7707672119141
1998	103.712699890137
1999	113.760719299316
2000	115.920928955078
2001	116.304542541504
2002	114.076889038086
2003	104.92317199707
2004	103.449501037598
2005	101.108100891113
2006	99.3765563964844
2007	97.7906723022461
2008	97.4913024902344
2009	98.1668395996094
2010	97.6069869995117
2011	96.9309768676758
2012	95.8345794677734
2013	94.9301605224609
2014	95.1305313110352
2015	96.0522003173828
2016	97.3474578857422
2017	97.40283203125
2018	96.7058029174805
2019	95.6502075195312
2020	94.4190673828125
2021	94.5295486450195
2022	94.7119674682617