<p>Yes, the number of seats available stay the same, but the number of applicants increase. Do some critical thinking will you? Look, the same number of admissions officers and the same number of seats. Lets say, in a school with 10 admissions officers got 1000 applicants for 100 seats. Each officer reads 100 applications and picks on average around 13. The extra is to over shoot since not all with metricate. The next year, the same team receives 1500; they still can only pick around 13 per officer, but they have to read 50 more applications. They would have less time per application and less time to debate on who to accept. That in turn lowers the acceptance rate and the selectivity.</p>