Year	% of profit
2005	53.6
2006	52.9
2007	55.2
2008	56.4
2009	56.4
2010	54.5
2011	51.8
2012	49.7
2013	49.2
2014	47.9
2015	48.2
2016	46.3
2017	46.4
2018	40.3
2019	37.9