Year	%
1996	35.67
1997	24.03
1998	21.19
1999	36.4
2000	26.43
2001	21.27
2002	21.04
2003	19.57
2007	19.33
2010	21.31
2011	10.48
2012	20.46
2015	16.85
2016	7.22
2021	24.62