Year	% gross
1971	17.2729396820068
1972	18.5495300292969
1973	20.1750106811523
1974	22.0614700317383
1975	23.1963596343994
1976	25.143159866333
1977	27.024169921875
1978	27.3680591583252
1979	27.3458595275879
1980	27.6616802215576
1981	28.7051906585693
1982	29.1558494567871
1984	31.1247005462646
1985	31.6160697937012
1986	31.2864398956299
1987	30.3589897155762
1988	29.3928699493408
1989	29.2169799804688
1990	29.9830093383789
1991	32.587718963623
1992	36.5045204162598
1993	41.6175689697266
1994	47.3265800476074
1995	52.8558502197266
1996	58.8592414855957
1997	60.257640838623
1998	62.1891288757324
2001	71.9571685791016
2002	74.4176406860352
2004	76.5621566772461
2005	80.9495162963867
2006	79.9859771728516
2007	83.7394485473633
2008	81.7390594482422
2009	81.9377899169922
2010	82.5503082275391
2011	85.1201934814453
2012	85.0378265380859
2013	84.3748016357422
2014	126.687561035156
2015	130.933471679688
2016	130.737258911133
2017	116.015998840332
2018	115.468002319336
2019	113.042999267578
2020	110.958999633789
2021	103.299003601074
2022	105.599998474121
2023	109.517997741699