Year	%
2002	21.9
2003	22.02
2005	20.78
2006	15.83
2007	13.54
2008	12.79
2009	10.86
2010	10.41
2011	10.26
2012	11.2
2013	9.99
2014	10.1
2015	10.42
2016	10.43
2018	11.24
2019	11.78
2020	11.78
2021	11.29