Year	% gross
2001	2.58442997932434
2008	17.8878402709961
2009	17.6657695770264
2010	11.4605197906494
2011	12.870059967041
2012	14.6622295379639
2013	15.5388298034668
2014	16.9534301757813
2015	19.1725997924805
2016	19.0898990631104
2017	22.4665794372559
2018	22.8208999633789
2019	28.2415904998779
2021	29.1100006103516