I would assume that both SDSU and USD would carry the debt service number consistently. The primary difference between South Dakota and North Dakota is that USD/SDSU can finance debt for athletic facilities. Here are the numbers:
USD:
Academic spending $198,846,155.00
Athletic spending $23,147,916.00
Football spending $4,446,693.00
Annual Debt Service $3,257,329.00
Total Debt Service $24,669,071.00
SDSU
Academic spending $254,653,012.00
Athletic spending $27,778,456.00
Football spending $8,799,956.00
Annual Debt Service $2,588,918.00
Total Debt Service $27,230,000.00