Year	Percent
1995	5.412
1996	5.946
1997	7.715
1998	7.361
1999	5.618
2000	6.586
2001	4.261
2002	5.868
2003	4.495
2004	5.168
2005	3.524
2006	4.497
2007	5.537
2008	6.447
2009	5.386
2010	6.276