Year	%
2000	0.02578286173108765
2001	0.023719765461131127
2002	0.022587739712512482
2003	0.022719760092508073
2004	0.021738245697449223
2005	0.019445171749280052
2006	0.017339574660022776
2007	0.01594215905184075
2008	0.015374706076752719
2009	0.014810465709184498
2010	0.014232535303701726
2011	0.012234874063003377
2012	0.011704991864222953
2013	0.011028615622149634
2014	0.010858331162223284
2015	0.010793955104203674
2016	0.011095674216162081
2017	0.010267052246444917
2018	0.009729806243713158
2019	0.009147861615009014
2020	0.009195976589149078