Year	% gross
1988	6.32978010177612
1990	6.85987997055054
1992	9.10182952880859
1996	11.0422401428223
1998	12.9961595535278
1999	14.0641002655029
2000	15.887900352478
2001	17.1346206665039
2002	20.2551307678223
2012	44.3199996948242
2013	41.3067092895508
2014	42.8175392150879
2015	43.7099800109863
2016	44.6150703430176