Year	Percent
1995	3.748
1996	3.462
1997	4.14
1998	4.818
1999	4.321
2000	4.852
2001	4.408
2002	4.302
2003	5.207
2004	5.553
2005	5.921
2006	6.196
2007	6.233
2008	7.338
2009	9.587
2010	7.906