The available information is in the following table.
As at November each year: IB/SDA claimants with duration of five years or over Percentage of IB/SDA claimants with duration of five years or over 2000 1,233,030 44.6 2001 1,311,790 47.1 2002 1,392,350 49.4 2003 1,433,850 50.8 2004 1,468,620 52.2 2005 1,489,980 54.1 2006 1,500,380 55.3 Notes: 1. Caseload figures are rounded to the nearest 10. Some additional disclosure control has also been applied. 2. ‘Claimant’ figures include credits only cases. 3. Figures for claimants with a duration of claim of five years or over are not available prior to 2000 as IB was not introduced until April 1995. Source: DWP Information Directorate: Work and Pensions Longitudinal Study 100 per cent. data