Year	% of expense
2006	0.09569573977081819
2007	0.016077307284243537
2008	1.7434200343637039
2009	0.31626336804789457
2010	0.17132824700945481
2011	0.2183361054173537
2012	0.3634604178163483
2013	1.200443441663694
2014	0.7541095200556766
2015	0.5669557442929954
2016	2.6222429330266483
2017	0.6383127774592264