Year	%
2002	27.94
2003	28.1
2005	25.16
2006	15.1
2007	12.77
2008	11.69
2009	15.13
2010	14.05
2011	13.53
2012	18.76
2013	14.12
2014	14.95
2015	13.08
2016	12.52
2018	19.31
2019	19.02
2020	16.89
2021	16.41