Year	Percent
1996	3.781
1997	6.94969
1998	8.25572
1999	3.74412
2000	4.44581
2001	4.20514
2002	3.48049
2003	4.04935
2004	3.72216
2005	3.39516
2006	3.99712
2007	4.10513
2008	5.7024
2009	2.78042
2010	0.82086
2011	1.66384
2012	1.55938
2013	0.78883
2014	0.06365
2015	-0.01975
2016	-0.08435
2017	1.16742