Year	% gross
1973	1.7304699420929
1974	1.92281997203827
1975	2.10341000556946
1976	2.33396005630493
1977	2.49001002311707
1978	2.822429895401
1979	3.55780005455017
1980	4.23290014266968
1981	4.98833990097046
1982	5.25752019882202
1983	5.18704986572266
1984	5.27465009689331
1985	5.43065023422241
1986	5.92645978927612
1987	6.31836986541748
1988	6.19202995300293
1989	6.24623012542725
1990	6.19331979751587
1991	6.09428977966309
1992	6.08383989334106
1993	6.27489995956421
1994	7.34026002883911
1995	8.3911304473877
1996	9.3192195892334
1997	10.2587900161743
1998	10.8290395736694
1999	11.4470195770264
2000	12.1148996353149
2001	13.461950302124
2002	15.0573902130127
2003	17.0582294464111
2004	18.6493701934814
2005	20.0354499816895
2006	21.0575408935547
2007	21.5882892608643
2008	22.1366195678711
2009	23.2112808227539
2010	24.7309703826904
2011	26.0144996643066
2012	27.7246494293213
2013	29.7825603485107
2014	36.3787612915039
2015	38.5751686096191
2016	39.8419799804688
2017	40.5196113586426
2018	41.2908706665039
2019	43.1707000732422
2020	46.6824989318848
2021	50.2663917541504
2022	53.4546699523926