Year	% of expense
2002	12.892125779196705
2003	12.849677221026745
2004	12.101975212146268
2005	12.404691930108278
2006	13.02952590278618
2007	12.587755298435635
2008	11.996502540380728
2009	11.66940940118429
2010	11.899013822995459
2011	11.790218878238147
2012	11.618469328146967
2013	11.405970673526685
2014	12.413860073203313
2015	12.464531099992652
2016	11.795856190660995
2017	12.492402003196336
2018	11.705317475669926
2019	11.93739054535575
2020	11.371515221594654
2021	12.13969903222313
2022	11.740241951827505