Year	%
2000	25.24415599292557
2001	24.695027291549028
2002	24.535630314965857
2003	24.330184472268197
2004	24.402366930529244
2005	23.671898118161252
2006	23.37302657971318
2007	23.057725387976216
2008	22.9247906486381
2009	22.793787079910512
2010	22.70603819999276
2011	22.36076641971364
2012	22.06196202564072
2013	21.833265737106636
2014	21.711106762996664
2015	21.73963811794031
2016	21.68033629350764
2017	21.605614331296547
2018	21.74763672012305
2019	21.804044936144372