Year	%
2000	17.561907294290748
2001	17.294096220721027
2002	17.475402556250685
2003	17.53944578470614
2004	17.381384796231217
2005	16.75086625962962
2006	16.107988960907104
2007	15.614831371303366
2008	15.187149820430147
2009	14.812794398985348
2010	14.495231290582357
2011	14.17437829072465
2012	13.755958339032698
2013	13.3791848674855
2014	13.137523725584115
2015	12.941629591146912
2016	12.801698073305305
2017	12.677896905042386
2018	12.57693954907565
2019	12.492479997352596