Year	% of people ages 15 and above
1993	86.8432693481445
1994	86.9070892333984
1995	87.20751953125
1996	87.5077972412109
1997	87.8010864257812
1998	88.0916137695312
1999	87.3703765869141
2000	88.7356872558594
2001	89.1294403076172
2002	89.3794937133789
2003	89.6112365722656
2004	89.8251876831055
2005	90.1046600341797
2006	90.2587127685547
2007	90.8306732177734
2008	91.0392913818359