Year	%
2000	52.010359798942034
2001	51.91331635172905
2002	51.80717087206153
2003	51.72053667501351
2004	51.538265922536304
2005	51.35901891188596
2006	51.18033065830184
2007	50.96364107195757
2008	50.662906616529334
2009	50.44472635308781
2010	50.17049051903681
2011	49.97494256977455
2012	49.77801260702446
2013	49.524937071010086
2014	49.274029911728555
2015	49.0698292888018
2016	48.8287250870107
2017	48.629810564780904
2018	48.356480169882424
2019	48.14776037403658