Year	Percent
1996	5.67716
1997	6.36841
1998	5.52572
1999	4.13402
2000	1.66063
2001	-6.16678
2002	4.6029
2003	10.78857
2004	3.22803
2005	-15.42128
2006	22.8236
2007	4.92575
2008	6.63472
2009	-9.70107
2010	4.31947
2011	5.4932
2012	-0.42167
2013	4.25915
2014	4.4771
2015	-0.23592
2016	3.84187
2017	6.68995