Year	% gross
1970	88.0213928222656
1975	98.227783203125
1980	101.294143676758
1981	100.855697631836
1982	100.775596618652
1983	101.03002166748
1984	100.60188293457
1985	100.780090332031
1987	100.311470031738
1988	100.688858032227
1989	100.593399047852
1990	100.366027832031
1991	100.987609863281
1992	101.879302978516
1993	102.043533325195
1994	102.094909667969
1995	102.220687866211
1996	102.97647857666
1998	100.89998626709
1999	99.4095077514648
2000	102.052856445312
2001	98.7598571777344
2002	95.0643005371094
2003	94.4034194946289
2004	96.3846206665039
2005	97.1487731933594
2006	97.6822967529297
2007	98.3000793457031
2008	98.7837677001953
2009	99.0334091186523
2010	99.2713775634766
2011	99.9359970092773
2012	100.596000671387
2013	101.302001953125
2014	99.9489974975586
2015	98.8539962768555
2016	100.393997192383
2017	101.271003723145
2018	101.747001647949
2019	101.981002807617
2020	102.772003173828
2021	102.095001220703
2022	97.6279983520508