Inflation expectations are one of the key elements that determine next years inflation. The main reason they have always "fiddled" the public inflation numbers

Inflation expectations are one of the key elements that determine next years inflation. The main reason they have always "fiddled" the public inflation numbers is if they reported actual inflation people would set their expectations on that - and it would make next years inflation worse/more volatile. insiders generally dont care about the public figures - they have their own in house statisticians to give them the real picture.