Year	%
1993	21.55
1997	24.9
1998	24.23
2001	22.19
2002	18.93
2003	18.34
2005	16.37
2006	16.05
2007	16.21
2008	16.07
2009	14.2
2014	11.82
2015	11.9
2016	12
2017	12.11
2018	12.27
2019	12.27
2020	12.31
2021	12.63