Year	%
2000	25.725046439790074
2001	25.347470496602995
2002	25.064961631678198
2003	24.850063764283533
2004	24.647775017511563
2005	24.406986996881276
2006	24.225542970277875
2007	23.953791375349457
2008	23.715265075921202
2009	23.528428350122603
2010	23.280684338648854
2011	23.074636819701283
2012	22.76053206898672
2013	22.536192362829855
2014	22.29288622402796
2015	22.053560353570177
2016	21.886432507418096
2017	21.65639400289914
2018	21.52875206216623
2019	21.405073163625698