Year	% gross
1977	0.0270600002259016
1978	0.0267099998891354
1979	0.01554000005126
1980	0.0169099997729063
1981	0.0192300006747246
1982	0.014189999550581
1983	0.0279699992388487
1984	0.0838899984955788
1985	0.325690001249313
1986	0.814199984073639
1987	1.64849996566772
1988	2.38573002815247
1989	2.96093988418579
1990	3.5889298915863
1991	3.7178099155426
1992	4.1647801399231
1993	4.12682008743286
1994	4.23016977310181
1995	4.90975999832153
1996	4.68830013275146
1997	5.6992301940918
1998	7.08067989349365
2003	14.3313598632812
2004	15.1500101089478
2005	17.117769241333
2006	19.2329597473145
2007	20.4086494445801
2008	20.4462108612061
2009	21.9678993225098
2010	27.852689743042
2011	31.5563507080078
2013	35.1496200561523
2014	41.1818618774414
2015	45.1898918151855
2016	46.8235092163086
2017	43.5767784118652
2018	44.9540214538574
2019	45.1723213195801
2020	48.3754386901855
2021	43.8433609008789