Year	%
2000	27.256383158934828
2001	26.880357599630056
2002	26.644123075233992
2003	26.40169235938168
2004	25.907465175679874
2005	25.623837946113028
2006	25.138254144682726
2007	24.9025531883639
2008	24.799184015238357
2009	24.58362695030398
2010	24.432533864360725
2011	24.132424269533203
2012	23.806262876171136
2013	23.2521754345373
2014	22.838659568484385
2015	22.738191184413093
2016	22.618457832619896
2017	22.207614735372676
2018	21.961733601321274
2019	21.75018326334023