; 50 Stat. 664, chapter 663; 29 U.S.C. 50 et seq.); and (B) other skilled workers in the clean energy technology industry, as determined by the Secretary. (11) Trend The term trend refers to jobs being created, jobs being eliminated, lifespan of jobs, required competencies of jobs, skill gaps of jobs, geographical locations of jobs, ongoing training for jobs, cleanliness of jobs (based on greenhouse gas reductions), current job openings, projected job openings, current wages of jobs, projected wages of jobs, unionization rates of jobs, and other information the Secretary determines appropriate. (12) Underrepresented populations The term underrepresented populations is a group that comprises less than 25 percent of the individuals employed in each occupation or field of work within the clean-energy technology industry.