Year	Percent
1995	2.895
1996	2.881
1997	2.676
1998	2.966
1999	3.084
2000	3.11
2001	3.569
2002	3.63
2003	4.207
2004	3.902
2005	3.561
2006	3.912
2007	3.807
2008	3.786
2009	4.586
2010	4.394