The information requested can be found in the following table:
Number Percentage 1997 98,528 52.8 1998 91,137 54.1 1999 95,133 56.3 2000 97,814 57.5 2001 100,260 57.5 2002 100,891 58.5 2003 103,715 59.9 2004 110,869 60.6 2005 112,615 62.3 2006 115,212 62.6 2007 114,692 63.7 2008 116,272 64.5 Note: The 1997-04 data are based on 15-year-old pupils at the start of the academic year. The 2005-08 data are based on pupils at the end of KS4. Source: Achievement and Attainment Tables