Year	%
1996	39.06
1997	17.11
1998	17.76
1999	17.59
2000	11.57
2001	10.55
2002	17.48
2003	17.33
2007	12.48
2010	16.6
2011	5.82
2012	14.76
2015	5.72
2016	4.99
2021	11.37