Complex sentence: Though the faculty participate numbers are growing, the overall number of memberships within the ASnA fluctuate from year to year, which is due to postgraduates who are members only having a membership for a year or two in order to obtain their dissertations.
Split into simpler sentences: Though the faculty participation numbers are growing, the overall number of memberships within the ASnA fluctuate from year to year. This is due to postgraduates, who are members only having a membership for a year or two in order to obtain their dissertations.