Year	% gross
1971	71.4536590576172
1972	75.4833831787109
1973	79.1069793701172
1974	86.2069396972656
1975	81.7679290771484
1977	80.3317489624023
1978	79.4982681274414
1979	79.7254104614258
1980	80.1177597045898
1981	76.9486312866211
1982	80.5899887084961
1983	81.5549011230469
1985	84.9051513671875
1986	86.2457122802734
1987	87.8530731201172
1988	89.5943222045898
1989	91.4602890014648
1990	94.0125885009766
1991	99.0200500488281
1992	102.006309509277
1993	101.860137939453
1994	111.120109558105
1995	111.736679077148
1996	111.304817199707
1997	111.012329101562
1998	110.632171630859
1999	110.702766418457
2000	105.613571166992
2001	104.490211486816
2002	103.000282287598
2003	102.332740783691
2004	101.949783325195
2005	106.580841064453
2006	106.928840637207
2007	106.601119995117
2008	106.255546569824
2009	106.034080505371
2010	105.910720825195
2011	106.155799865723
2012	105.523818969727
2013	103.786338806152
2014	102.666290283203
2015	102.87670135498
2016	102.894470214844
2017	103.372512817383
2018	103.489868164062
2019	103.987831115723
2020	104.345947265625
2021	104.434661865234
2022	104.080551147461