Year	Percent
1995	4.091
1996	4.683
1997	5.971
1998	5.072
1999	4.685
2000	5.466
2001	5.101
2002	4.877
2003	4.573
2004	4.823
2005	4.1
2006	4.2
2007	4.852
2008	5.243
2009	4.912
2010	4.809