To ask the Scottish Executive, in respect of its estimates in Government Expenditure and Revenues in Scotland (GERS), what total revenue has been raised in Scotland from (a) employers’ national insurance contributions, (b) the 11% rate of employees’ national insurance contributions and (c) the 1% rate of employees’ national insurance contributions in each year since GERS was first published. The latest estimates of Employers’National Insurance Contributions in Scotland (a) are presented in the following table for 2000-01to 2004-05.