Year	%
2001	13.98
2004	17.4
2005	17.46
2006	16.41
2007	13.94
2008	12.47
2009	11.82
2010	10.84
2011	13.85
2012	13.97
2013	12.57
2014	13.04
2015	13.54
2016	12.99
2017	12.14
2018	12.69
2019	12.86
2020	12.7
2021	12.71