Year	Percent
1994	5.53304
1995	5.1655
1996	5.20374
1997	6.25752
1998	3.97883
1999	4.06078
2000	3.95909
2001	3.7728
2002	3.86788
2003	4.58909
2004	4.886
2005	5.31417
2006	6.8211
2007	6.9477
2008	6.9533
2009	7.75852
2010	7.64431
2011	8.2429
2012	9.77765
2013	13.01215
2014	15.04581
2016	12.50969