Year	Percent
1992	5.256
1994	11.3
1995	10.94
1996	13.46
1997	9.412
1998	11.21
1999	2.731
2000	2.437
2001	5.294
2002	4.202
2003	2.449
2004	3.195
2005	3.394
2006	1.766
2007	1.049