Year	%
2000	63.131
2001	44.33672
2002	45.00285
2003	39.66955
2004	35.52484
2005	33.76305
2006	31.1663
2007	32.30558
2008	32.10759
2009	29.37921
2010	33.09708
2011	32.08879
2012	31.63935
2013	31.78858
2014	15.75291
2015	14.88895
2016	13.75448
2017	13.25785
2020	12.88043