Denne stigning skyldes hovedsagelig to reguleringer af justeringskoefficienten ( + 7$ den I.I.75 og 5$ den 1.7.75) og de normale avancementer til et højere løntrin.
This increase is due principally to the two adjustments to the weighting factor (+ 7% on 1 January 1975 and + 5% on 1 July 1975) and to normal advancement.