The authority is hereby authorized to be the originator of any federally guaranteed student loan. Provided, however, with respect to borrowers attending higher education institutions in the state of Missouri, the authority’s origination of Stafford loans under the Federal Family Education Loan Program shall not exceed ten percent of the previous year’s total Missouri Federal Family Education Loan Program volume as determined by the Student Marketmeasure report, data from the United States Department of Education, or other reputable sources.