Year	%
2000	28.008387741092843
2001	27.658754593405323
2002	27.428613994097308
2003	27.21045173418483
2004	26.77548960993376
2005	26.496130814309446
2006	26.10515165675284
2007	25.938729132029458
2008	25.891119091382333
2009	25.72286676304638
2010	25.666152415505472
2011	25.423487036408083
2012	25.112592071414078
2013	24.466653839001893
2014	23.923608617442394
2015	23.875978301740773
2016	23.728343128072552
2017	23.310891082699523
2018	23.03596529247131
2019	22.849091148629086