Year	Percent
1995	4.016
1996	4.352
1997	4.024
1998	3.978
1999	3.819
2000	2.943
2001	2.241
2002	2.272
2003	4.353
2004	4.515
2005	3.206
2006	3.932
2007	4.121
2008	4.792
2009	3.508
2010	3.584