Year	% gross
1970	59.6303100585938
1971	59.7743301391602
1972	60.5354385375977
1973	61.7024383544922
1974	65.1553421020508
1975	67.497802734375
1976	68.9899368286133
1977	70.8362579345703
1978	71.9246215820312
1979	74.7244415283203
1980	77.7022705078125
1981	79.324836730957
1982	79.6594161987305
1983	79.5842437744141
1984	78.8858489990234
1985	76.6655883789062
1986	76.4804306030273
1987	74.642692565918
1988	73.8232116699219
1989	75.0681686401367
1990	72.5151596069336
1991	73.8209991455078
1992	72.2410278320312
1993	72.244270324707
1994	72.1010284423828
1995	73.8614196777344
1996	73.7845077514648
1997	77.6629180908203
1998	77.8437271118164
1999	76.8383483886719
2000	78.7393798828125
2001	81.7369689941406
2002	84.5651321411133
2003	88.6301879882812
2004	91.0219879150391
2005	94.6203231811523
2006	97.2743530273438
2007	100.58602142334
2008	104.399238586426
2009	104.048736572266
2010	103.373596191406
2011	103.343673706055
2012	103.540168762207
2013	103.105949401855
2014	102.721893310547
2015	101.720733642578
2016	102.24861907959
2017	103.041770935059
2018	104.289360046387
2019	105.208808898926
2020	106.161376953125
2021	104.895492553711
2022	104.882606506348