Year	%
2000	28.66079357100293
2001	28.274596018329046
2002	27.987637621933217
2003	27.725977929621184
2004	27.362175933978808
2005	26.90228338817987
2006	26.4207284327591
2007	25.873160862498487
2008	25.284461726446555
2009	24.67194403603206
2010	24.09066184421776
2011	23.580866663382768
2012	23.119666280345367
2013	22.728667165239134
2014	22.422918490131362
2015	22.153138051174693
2016	21.92069401587135
2017	21.794657720863558
2018	21.67843063249388
2019	21.62826720187242