Year	%
2000	24.66797406844372
2001	24.194724872504363
2002	23.927078072623043
2003	23.569843763569946
2004	22.84372981270509
2005	22.52069701621096
2006	21.668635165343733
2007	21.173486309009668
2008	20.837603612201228
2009	20.409195175242917
2010	19.93681596631938
2011	19.3530461570388
2012	18.91573029710062
2013	18.54626437070781
2014	18.47893393437339
2015	18.192270870911308
2016	18.140419718775448
2017	17.645622838932486
2018	17.40918065919114
2019	17.01826928365141