Year	%
2000	42.18369139854092
2001	41.931118280334026
2002	42.411419592568
2003	42.1784598079574
2004	41.481778042736465
2005	41.5855978611679
2006	39.69279764481073
2007	38.70019450281194
2008	38.27463348110944
2009	37.218060008861706
2010	36.32888770199588
2011	34.82865282371549
2012	33.79221699126761
2013	32.923404974233236
2014	33.60058449896326
2015	32.37682534331143
2016	32.35284370885903
2017	31.300556509784602
2018	31.070098866336725
2019	30.232277894297667