Bulgarias total military personnel as of 2014 is 37,100, of which 30,400 (80.1%) are active military personnel and 8,100 (11.9%) are civilian personnel. The Land Forces are the largest branch, with at least 18,000 men serving there. In terms of percentage, 53% of all Army personnel are in the Land Forces, 25% are in the Air Force, 13% are in the Navy and 9% are in the Joint Forces Command. Annual spending per soldier amounts to 30,000 leva (~ 15,000 euro) and is scheduled to increase to 43,600 leva by 2014.
Question: How many more percentage points do Land Forces make up of the military personnel than Air Force?
Answer: 28