Year	%
2000	36.73750782956104
2001	36.32245571430384
2002	35.89263681129797
2003	35.48502205798702
2004	35.019173774681875
2005	34.606080990348296
2006	34.19323426807996
2007	33.82858448867306
2008	33.45934777771714
2009	33.177110987735325
2010	32.96886487808168
2011	32.85408489621402
2012	32.79976133954528
2013	32.77925532590607
2014	32.782852086438155
2015	32.84434097966712
2016	32.90471182055683
2017	32.98404077285867
2018	33.06320814956085
2019	33.12491030696831