commiss regul ec septemb initi implement measur council regul ec harmon indic consum price commiss european commun regard treati establish european commun regard council regul ec octob harmon indic consum price articl thereof member state requir produc harmon index consum price hicp start index januari articl regul ec requir scope hicp good servic purchas econom territori member state purpos directli satisfi consum coverag exist consum price indic produc member state practic inclus newli signific good servic procedur adjust price qualiti item price method combin price form price indic elementari aggreg sampl method practic obtain price differ member state extent result consum price indic produc member state fail meet compar requir product hicp practic previou price substitut current monthli price differ price collect extent result consum price indic produc member state fail meet compar requir product hicp includ newli signific good servic hicp weight updat annual weight updat frequent implement measur ensur compar hicp accord articl regul ec where accord articl regul ec commiss eurostat requir submit report council reliabl hicp complianc compar requir measur provid regul accord opinion statist programm committe spc establish council decis eec euratom european monetari institut consult conform articl regul ec posit opinion adopt regul gener provis articl aim aim regul establish purpos product compar harmon index consum price hicp produc member state initi coverag good servic compar practic updat coverag includ newli signific consum good servic minimum standard procedur qualiti adjust minimum standard price formula compil price indic elementari aggreg aim ensur sampl price hicp suffici reliabl purpos intern comparison provid inform set minimum standard sampl articl definit purpos regul initi coverag good servic hicp defin digit categori categori classif coicop hicp classif individu consumpt purpos adapt hicp annex newli signific good servic defin good servic price explicitli includ member state hicp estim consum expenditur part thousand expenditur cover hicp qualiti chang occur member state judg chang specif result signific differ util consum varieti model good servic good servic previous select price hicp substitut qualiti chang aris comprehens revis hicp sampl qualiti adjust procedur make allow qualiti chang increas decreas observ current refer price factor amount equival qualiti chang target sampl defin set price good servic member state plan obtain product hicp januari plan subsequ date order meet member state european standard reliabl compar observ price price confirm member state estim price price substitut observ price base estim procedur previous observ price regard estim price shown estim replac price observ price good servic direct substitut good servic price target sampl elementari aggreg index price index elementari aggreg compris price data elementari aggreg refer expenditur consumpt cover detail level stratif hicp reliabl expenditur inform weight purpos sampl relat procedur construct hicp subset popul price face consum estim price chang categori good servic cover hicp reliabl assess precis refer scale sampl error repres refer lack bia ii measur ensur compar reliabl relev hicp articl initi coverag hicp includ price indic weight categori annex account part thousand total expenditur cover categori deem compar articl newli signific good servic member state systemat seek identifi newli signific good servic check signific good servic report newli signific member state hicp compil includ price newli signific good servic good servic estim fall definit articl accomplish month identif adjust weight relev categori coicop hicp classif annex regul assign part weight specif newli signific good servic articl minimum standard procedur qualiti adjust hicp qualiti adjust made deem compar qualiti occur member state construct price indic make qualiti adjust base explicit estim qualiti chang absenc nation estim member state estim base inform provid commiss eurostat relev estim price estim differ price select substitut item replac case qualiti chang estim differ price item justifi estim replac made good servic offer reduc price replac select similar util consum similar price articl minimum standard price member state produc hicp observ price target sampl target sampl requir monthli observ observ fail due avail item reason estim price month replac price month exception target sampl requir observ frequent monthli estim price month observ price requir estim price occas price observ fail observ fail consecut occas replac price circumst refer articl replac price estim price continu provid extent limit level achiev compar articl price indic elementari aggreg hicp compil formula paragraph annex ii regul altern compar formula result index differ systemat index compil formula tenth percentag point averag year previou year articl minimum standard sampl hicp construct target sampl categori coicop hicp take account weight categori suffici elementari aggreg repres divers item categori suffici price elementari aggreg account variat price movement popul deem reliabl compar articl qualiti control member state provid commiss eurostat request inform expenditur exclus coverag express proport total expenditur cover hicp suffici evalu complianc regul report commiss eurostat newli signific good servic identifi requir ground inclus newli signific good servic suffici evalu complianc regul monitor incid qualiti adjust made suffici demonstr complianc regul provid commiss eurostat request inform establish maintain clear statement target sampl maintain check price observ price estim suffici ensur complianc regul provid commiss eurostat request inform evalu ensur complianc formula formula paragraph annex ii regul provid commiss eurostat request inform effect altern formula select period select elementari aggreg suffici evalu complianc regul provid commiss eurostat request detail target sampl suffici evalu complianc regul summari statist repres precis sampl suffici commiss eurostat make propos minimum standard sampl inclus review hicp requir articl regul ec due octob iii final provis articl regul enter forc dai public offici journal european commun regul bind entireti directli applic member state brussel septemb commiss yve thibault de silgui member commiss oj oj annex initi coverag good servic hicp includ categori categori gt tabl gt annex ii formula compil elementari aggreg compil price indic elementari aggreg ratio arithmet price gt refer graphic gt ratio geometr price gt refer graphic gt pt current price pb refer price number price elementari aggreg altern formula provid fulfil compar requir laid articl arithmet price rel gt refer graphic gt circumst result failur meet compar requir exception shown fail compar requir price index elementari aggreg calcul chain index prefer formula ratio arithmet mean gt refer graphic gt pit denot ith price quotat elementari aggreg period st denot sampl price obtain elementari aggreg period sampl practic updat monthli price obtain longer period base period period replenish itb gt refer graphic gt simpl ratio arithmet mean similarli geometr formula arithmet price rel chain frequent annual