Year	Percent
1993	1.78297
1994	0.80704
1995	1.70651
1996	2.51216
1997	6.09749
1999	4.35942
2000	6.53468
2001	6.38983
2002	7.69191
2003	7.21797
2004	7.9049
2005	7.4823
2006	7.74128
2007	6.18184
2008	0.44923
2010	0.01497
2012	8.83479