Year	% gross
1971	24.09840965271
1998	67.3953628540039
1999	72.5820236206055
2000	70.1280364990234
2001	73.2119827270508
2002	78.0644607543945
2003	80.8071975708008
2004	83.8102722167969
2005	85.2724075317383
2006	84.9520263671875
2007	84.8977508544922
2008	84.6359786987305
2009	83.5469284057617
2010	88.7460098266602
2011	86.3540267944336
2012	88.0428085327148
2013	89.7377777099609
2014	90.2572708129883
2015	91.1453704833984
2016	90.994987487793
2017	89.7453231811523
2018	89.077392578125
2019	89.2583618164062
2020	89.5339508056641
2021	91.3492813110352
2022	91.5131378173828