Year	Percent
1996	11.38758
1997	8.42852
1998	7.39285
1999	6.59014
2000	5.44724
2001	8.67087
2002	7.58021
2003	5.6543
2004	3.31609
2005	1.55023
2006	2.18825
2007	4.16865
2008	4.51225
2009	3.35554
2010	-0.98711
2011	1.11944
2012	0.45881
2013	1.60232
2014	0.79327
2015	0.9673
2016	0.89567
2017	1.9762