Year	Percent
1995	3.779
1996	4.413
1997	3.891
1998	4.16
1999	4.131
2000	3.976
2001	4.428
2002	5.035
2003	5.044
2004	5.139
2005	4.735
2006	5.93
2007	6.903
2008	6.543
2009	7.248
2010	6.594