Year	Percent
1995	5.408
1996	11.44
1997	8.554
1998	8.787
1999	9.308
2000	15.66
2001	17.02
2002	15.2
2003	21.13
2004	16.28
2005	17.59
2006	18.56
2007	16.48
2008	20.6
2009	14.55
2010	17.49