Year	% of profit
2005	21.5
2006	21.5
2007	21.5
2008	21.5
2009	22.6
2010	22.6
2011	22.6
2012	22.6
2013	21
2014	21
2015	21
2016	21
2017	21.7
2018	21.7
2019	23.1