Year	%
2000	16.22057596974591
2001	15.820517095742659
2002	15.694723015610856
2003	15.56698872452814
2004	15.30499689556125
2005	14.875072630040899
2006	14.683967742244496
2007	14.402600795892642
2008	14.362151256734395
2009	14.155033074754789
2010	14.024009150403854
2011	13.833887868176365
2012	13.630087589171167
2013	13.370257664728253
2014	13.252522472355242
2015	13.23942286568418
2016	13.278748448856893
2017	12.984774875698628
2018	12.804502886290726
2019	12.696602299750472