Year	Percent Enrolled
1988	30.3
1989	30.9
1990	32
1991	33.3
1992	34.4
1993	34
1994	34.6
1995	34.3
1996	35.5
1997	36.8
1998	36.5
1999	35.6
2000	35.5
2001	36.3
2002	36.7
2003	37.8
2004	38
2005	38.9
2006	37.3
2007	38.8
2008	39.6