(8)The HICP and the harmonised index of consumer prices at constant tax rates (HICP-CT) should be broken down into categories of the European classification of individual consumption according to purpose (ECOICOP). Such classification should ensure that all European statistics relating to private consumption are consistent and comparable. The ECOICOP should also be consistent with the UN COICOP, which is the international standard classifying individual consumption according to purpose, therefore the ECOICOP should be adapted to align it with changes to the UN COICOP.