Year	%
2000	29.59872427083164
2001	29.07089237340013
2002	28.695068518760362
2003	28.588836410903607
2004	28.426022630346456
2005	28.249659010279494
2006	28.32215308534535
2007	28.009014517963518
2008	27.629979648991462
2009	27.278817630875736
2010	26.79940932900534
2011	26.231985684027713
2012	25.747091948633116
2013	25.40777109171625
2014	25.07852175203999
2015	24.80142212765528
2016	24.615676034655834
2017	24.51445771534658
2018	24.495141351818262
2019	24.381412793372125