Year	%
1996	22.65
1999	21.64
2000	21.61
2001	17.22
2002	17.46
2003	17.55
2005	17.55
2006	12.32
2007	12.42
2010	18.65
2011	19.51
2012	14.1
2013	15.11
2014	12.88
2015	12.19
2016	13.89
2019	15.98
2020	15.27