Year	%
1996	24.21
1999	21.21
2000	21.23
2001	16.3
2002	16.22
2003	16.43
2004	15.93
2006	15
2007	15.13
2010	13.81
2011	13.78
2012	12.04
2013	12.55
2020	10.18
2021	9.53