Year	% gross
1992	4.36323976516724
1993	4.62595987319946
1994	5.01527976989746
1995	5.16750001907349
1996	5.28984022140503
1997	4.91354990005493
1999	8.07262992858887
2000	8.49279975891113
2001	9.03392028808594
2002	9.56715965270996
2003	11.5206003189087
2004	14.5110197067261
2005	24.5114402770996
2006	27.4240608215332
2007	27.1744804382324
2008	24.3281993865967
2009	23.6653804779053
2010	23.8530197143555
2011	25.8482704162598
2012	24.4688205718994
2013	22.5978202819824
2014	21.3620700836182
2015	19.5446300506592
2016	21.0107536315918
2017	21.3832607269287
2018	23.3283596038818
2019	23.8528347015381