Year	%
1993	20.28
1997	24.26
1998	24.44
2000	16.34
2003	13.56
2005	12.77
2006	12.67
2007	12.65
2008	12.63
2009	12.61
2010	12.61
2011	12.52
2012	12.86
2013	12.85
2014	12.78
2015	12.85
2016	12.9
2018	13.01
2019	13.09
2020	13.29
2021	13.3