Year	% of expense
1995	0.7496251874062968
2002	2.2649962853284693
2003	0.9706847445679389
2004	0.7984140036687558
2005	0.640165869651048
2006	2.460917712629755
2007	2.619747130752253
2008	1.189401018799458
2009	1.207225154816463
2010	0.8789482997671029
2011	0.8979326339071533
2012	0.9081064336433979
2013	0.6319256427943427
2014	1.146181033056179
2015	1.0874691711910305
2016	1.193481433038464
2017	1.153474699451265
2018	0.8262983502496726
2019	0.6655587433098316
2020	1.2066804507817261
2021	4.191709074897757
2022	3.0177683321430897