Year	%
2000	26.124734671333563
2001	25.950186677708153
2002	25.703231202335658
2003	25.543335054274017
2004	25.24450114429655
2005	24.804117123404904
2006	24.366017950074617
2007	24.08747851448577
2008	23.58497346355666
2009	23.230745907022303
2010	22.7643818887685
2011	22.35159329472687
2012	22.08732484090639
2013	21.756452140701093
2014	21.561245349046185
2015	21.30101683837101
2016	21.125679837226112
2017	20.946741892509053
2018	20.865115788303466
2019	20.66496286744002