Year	%
2000	2.71
2001	4.07
2002	3.84
2003	4.05
2004	3.27
2005	2.35
2006	2.86
2007	3.43
2008	4.06
2009	3.53
2010	4.44
2011	4.63
2012	5.73
2013	7.02
2014	6.47
2015	8.32
2016	9.53
2017	10.2
2018	9.99
2019	9.33
2020	13.5
2021	16.54