Year	%
2000	27.515955451046253
2001	27.06204934128237
2002	26.709183432805368
2003	26.498241304867655
2004	26.226966232392225
2005	25.974879015905007
2006	25.759317907229214
2007	25.493590162349555
2008	25.264949017838074
2009	25.097944763714327
2010	24.808959796228105
2011	24.57474645259453
2012	24.28253753778284
2013	24.01940809302964
2014	23.701722894510937
2015	23.42147066373359
2016	23.17471728188645
2017	22.90107716768698
2018	22.746776492637352
2019	22.580485175954532