Year	Percent
1993	0.49302
1994	2.27114
1995	5.785
1996	2.58474
1997	4.74131
1998	6.63614
1999	3.55569
2000	-0.17231
2001	0.32829
2002	0.29035
2003	2.37334
2004	7.9338
2005	1.73012
2006	6.42244
2007	5.46787
2008	7.33454
2009	4.03784
2010	9.86093
2011	11.06464
2012	3.95037
2013	8.34376
2014	4.59301
2015	17.13123
2016	9.08869
2017	-1.41727