Year	%
2000	34.49682372153758
2001	33.96389912547834
2002	33.55710773477039
2003	33.359004259948094
2004	32.63957835404496
2005	32.36968594151535
2006	31.919383471505473
2007	31.43895188883301
2008	30.61336611366266
2009	30.409561033371585
2010	29.424387970178294
2011	28.555751485699915
2012	28.087834770409458
2013	27.494466005684238
2014	26.905822502479683
2015	27.08957286735443
2016	26.447775504020075
2017	26.00615874371597
2018	25.484574513415
2019	24.73193108815486