Year	Percent
1995	3.864
1996	4.257
1997	4.97
1998	5.065
1999	5.338
2000	5.429
2001	5.782
2002	6.134
2003	5.819
2004	5.473
2005	5.248
2006	5.277
2007	4.927
2008	4.81
2009	4.836
2010	4.656