In computing the amount of a basic pension, the Norwegian agency counts a person’s periods of residence in Norway as far back as 1937, even though the present Norwegian social security system did not take effect until 1967.  Prior to 1991, however, a less liberal rule applied to persons who lived outside Norway at the time they became entitled to a basic pension.  In this situation, the periods of Norwegian residence that could be counted from 1937 through 1966 were subject to a maximum that served to reduce the total benefit payable.  Article 7.7 permits people who became entitled before 1991 to request a benefit recalculation so that they receive credit for all their years of residence from 1937 through 1966.