Year	%
1996	21.58
1999	16.77
2000	10.29
2001	16.25
2002	11.28
2003	10.37
2006	8.36
2007	9.32
2008	9.14
2010	9.31
2011	11.63
2012	12.68
2013	10.94
2015	10.55
2016	11.34
2019	9.09