Year	%
2000	48.6892193496308
2001	48.52501519138446
2002	48.35658647114001
2003	48.17647927663992
2004	47.93741410866416
2005	47.63007709043049
2006	47.31162186279132
2007	46.92616095942367
2008	46.48865503650666
2009	46.05871497568955
2010	45.653792611288836
2011	45.29293004091464
2012	45.014659923846686
2013	44.74559828314991
2014	44.534194866127905
2015	44.34700847356701
2016	44.15934901277364
2017	43.936258939588214
2018	43.74448596312017
2019	43.56955063475072