Year	% gross
1970	71.0343627929688
1971	70.7130126953125
1972	72.5124969482422
1973	76.3960494995117
1974	75.9397125244141
1975	76.936149597168
1976	76.8919982910156
1977	78.5449295043945
1978	75.359977722168
1979	75.1917572021484
1980	76.0235900878906
1981	77.2677307128906
1982	77.7610778808594
1983	79.7474212646484
1984	81.1178665161133
1985	81.0983963012695
1986	82.6592025756836
1987	80.9988632202148
1988	83.3707504272461
1989	85.7629318237305
1990	85.6475601196289
1991	85.6769332885742
1992	86.2690963745117
1993	87.5582962036133
1994	88.56640625
1995	88.3002471923828
1996	88.0279769897461
1997	87.8205032348633
1998	86.7973327636719
1999	87.2278366088867
2000	88.461540222168
2001	88.0594177246094
2002	89.5721435546875
2003	95.9086074829102
2004	98.0627670288086
2005	99.8149108886719
2006	100.992797851562
2007	102.602439880371
2008	102.530853271484
2009	101.865386962891
2010	102.044509887695
2011	101.118057250977
2012	102.670143127441
2013	103.904083251953
2014	103.284507751465
2015	104.231369018555
2016	109.457000732422
2017	108.153961181641
2018	97.4677429199219
2019	96.8578033447266
2020	98.0997467041016
2021	99.0648880004883
2022	105.089416503906