Year	%
2000	3.76852515615772
2001	3.37632291622897
2002	3.32300661185077
2003	3.2116412050563
2004	2.80015266064712
2005	2.67018462123514
2006	2.56427986943677
2007	2.56279968312447
2008	2.6107541776914
2009	2.22323633588977
2010	2.22153576750398
2011	2.11208881176804
2012	1.82308572232925
2013	1.81751497022414
2014	1.72552026502172
2015	1.73125202065024
2016	1.69018184333307
2017	1.44046141963872
2018	1.36024638198396
2019	1.33584120538789
2020	1.29738455640649