commiss regul ec decemb lai detail rule implement council regul ec minimum standard qualiti hicp weight text eea relev commiss european commun regard treati establish european commun regard council regul ec octob harmon indic consum price articl thereof consult european monetari institut virtu articl regul ec member state requir produc harmon index consum price hicp start index januari commiss regul ec establish initi implement measur regul ec implement measur ensur compar hicp maintain reliabl relev hicp accord articl regul ec implement measur adopt take greatest account cost effect accord articl regul articl regul ec requir weight hicp updat frequenc suffici meet compar requir requir famili budget survei carri frequent year member state acknowledg experienc consumpt pattern make frequent survei consum price indic hicp weight deriv updat frequenc result hicp base thereon fail meet compar requir articl regul oper measur compar requir order establish weight updat order ensur compar articl regul ec requir hicp price indic laspeyr type rel price good servic chang consum expenditur pattern chang extent make weight expenditur group underli quantiti updat order ensur relev virtu articl regul ec hicp compil includ price newli signific good servic regul requir member state carri statist survei measur provid regul accord opinion statist programm committe adopt regul articl aim aim regul ensur hicp construct weight suffici reliabl relev purpos intern comparison articl definit purpos regul weight refer period hicp defin month period consumpt expenditur weight estim compil latest hicp index figur indic defin commiss regul ec articl minimum standard weight month member state produc hicp weight reflect consum expenditur pattern weight refer period end year preced decemb year member state carri review weight order ensur suffici reliabl relev meet compar requir establish articl regul ec review confin weight level indic major compon review member state check import weight refer period current price develop major compon index rel hicp sustain market develop major compon group reliabl evid show refer paragraph weight chang affect chang hicp percentag point averag year previou year member state adjust weight hicp appropri member state oblig account occur year period end decemb review adjust made pursuant paragraph implement member state latest index januari year review articl qualiti control member state provid commiss eurostat request suffici inform weight construct hicp includ weight refer period outcom annual review adjust made complianc regul evalu articl entri forc regul enter forc dai public offici journal european commun regul bind entireti directli applic member state brussel decemb commiss yve thibault de silgui member commiss oj oj oj