Year	%
2002	20.27
2003	17.09
2004	17.14
2005	17.16
2006	15.81
2007	18.93
2008	18.8
2009	18.76
2012	5.53
2015	4.84
2016	7.85
2017	8.34
2020	12.66
2021	11.08