Year	Percent
1995	1.954
1996	1.998
1997	1.932
1998	2.079
1999	2.28
2000	1.957
2001	2.233
2002	2.236
2003	2.534
2004	2.368
2005	2.397
2006	2.501
2007	2.72
2008	2.457
2009	2.48
2010	2.61