Year	%
2000	10.3141469521754
2001	9.90073278317987
2002	8.74071171855736
2003	8.5193328742632
2004	7.62136518703205
2005	7.42053350400126
2006	6.89916880302373
2007	6.39246550222868
2008	5.26217135392772
2009	4.91061927693344
2010	4.59298562645994
2011	3.77597206599782
2012	3.47642064778055
2013	3.31073756286639
2014	3.03286971899675
2015	2.89751656370217
2016	2.33780069608712
2017	2.40871284435385
2018	2.14481248465872
2019	1.88776446065724
2020	1.92301883746688