Year	Percent
1995	2.477
1996	4.517
1997	6.518
1998	5.892
1999	5.478
2000	6.915
2001	7.777
2002	7.773
2003	7.063
2004	5.598
2005	6.15
2006	5.876
2007	4.256
2008	4.78
2009	6.071
2010	6.87