Year	Percent
1994	6.97119
1995	7.6055
1996	7.92885
1997	7.72727
1998	7.78455
1999	6.56894
2000	3.48335
2001	4.64838
2002	5.47622
2003	5.11835
2004	4.39577
2005	4.36128
2006	4.4485
2007	4.5702
2008	4.29041
2009	5.09686
2010	5.79248
2011	5.58784
2012	4.74784
2013	4.43731
2014	4.76013
2015	4.38507
2016	4.61691