Under the heading 2000, the difference between the total social security contributions and those collected by the social security parastatals corresponds to the levy for realignment of pensions operated on the remuneration and pensions of employees and former agents of P&T and BCEE; one of these establishments belonging to the "non-corporate and quasi-corporate sector" and the other to the "credit institutions sector".
Compulsory social security contributions paid by EU civil servants include imputed social security contributions.