Year	Percent
1995	4.876
1996	4.606
1997	4.642
1998	4.642
1999	4.676
2000	4.768
2001	4.611
2002	4.621
2003	4.709
2004	4.665
2005	4.662
2006	4.522
2007	4.445
2008	4.297
2009	4.806
2010	6.028