In addition to the salaries provided for county assessors in Sections 4-44-4 through 4-44-5 NMSA 1978, county assessors may receive additional cumulative increments up to:
A. an additional seven hundred fifty dollars ($750) a year for holding an "Appraiser 1" certificate;
B. an additional one thousand seven hundred fifty dollars ($1,750) a year for holding an "Appraiser 2" certificate;
C. an additional three thousand dollars ($3,000) a year for holding an "Appraiser 3" certificate; and
D. an additional three thousand five hundred dollars ($3,500) a year for holding an "Appraiser 4" certificate.