Year	%
2000	52.673433014524555
2001	52.51141538853228
2002	52.32695993406535
2003	52.127750129356016
2004	51.88948556222436
2005	51.61253057029554
2006	51.305573762930024
2007	50.96515268204213
2008	50.58147610868198
2009	50.21442879332608
2010	49.856207254041095
2011	49.52932737201618
2012	49.26190842860066
2013	49.026471488399125
2014	48.79578301121479
2015	48.601010450807344
2016	48.396936847943046
2017	48.19197183462175
2018	47.957432014950676
2019	47.77470149050124