Year	% gross
1970	5.05124998092651
1971	4.39457988739014
1972	4.4054799079895
1973	4.42440986633301
1974	4.42940998077393
1975	5.1735200881958
1976	5.42242002487183
1977	5.58782005310059
1978	4.90946006774902
1979	4.92768001556396
1980	4.95080995559692
1981	5.03436994552612
1982	5.16184997558594
1983	5.136390209198
1984	5.23898983001709
1985	5.41058015823364
1986	5.52948999404907
1987	5.62101984024048
1988	5.88308000564575
1989	6.12340021133423
1990	6.58628988265991
1991	6.96091985702515
1992	7.28049993515015
1993	7.55986976623535
1994	7.93575000762939
1995	8.32544040679932
1996	9.15275955200195
1997	9.4138298034668
1998	10.0582704544067
1999	10.1165704727173
2000	11.3593101501465
2001	12.4927196502686
2002	13.0823802947998
2003	13.9280996322632
2004	14.5789203643799
2005	14.7552700042725
2006	14.9655704498291
2007	16.1363391876221
2008	17.6512794494629
2009	19.3173007965088
2010	20.1492691040039
2011	20.9498500823975
2012	22.1927299499512
2013	22.8070106506348
2014	23.2034702301025
2015	23.6370105743408
2016	23.7308692932129
2017	24.5396595001221
2018	24.7323093414307
2019	25.3544006347656
2020	25.7343902587891
2021	25.9750900268555