Year	%
2000	0.35284821110604586
2001	0.3536479801479379
2002	0.35493112059419824
2003	0.3470765170608458
2004	0.3416169868482037
2005	0.329248551810164
2006	0.32544597624161303
2007	0.3295981742828302
2008	0.3221252792431255
2009	0.32209179116810027
2010	0.32031179036908153
2011	0.3126685017642594
2012	0.31316684403171274
2013	0.31159518226250066
2014	0.3130191162133422
2015	0.3102378097189967
2016	0.2969024866286388
2017	0.2916135158901237
2018	0.2902882379007027
2019	0.2871840922939298
2020	0.2765854100510906