Year	%
1996	17.06
1997	10.81
1998	13.56
1999	14.8
2000	20.24
2002	12.52
2003	11.32
2004	12.45
2005	10.85
2006	9.68
2009	7.93
2010	8
2018	4.66
2019	6.58