Year	%
1993	16.57
1998	16.2
1999	12.43
2000	13.29
2002	13.62
2003	13.72
2004	13.79
2005	13.76
2006	12.51
2007	12.56
2008	15.41
2009	12.43
2010	12.33
2011	12.35
2012	12.2
2013	12.21
2014	12.23
2015	12.25
2016	12.14
2018	13.19
2019	17.27
2020	12.6
2021	12.69