Year	Percent
1996	2.55368
1997	6.80152
1998	5.20689
1999	3.85202
2000	14.82753
2001	6.49005
2002	9.4701
2003	4.30057
2004	4.15523
2005	5.14107
2006	7.04841
2007	7.94373
2008	1.47004
2010	2.39702
2011	3.0219
2012	1.2475
2016	4.70835