(2) The department shall maintain accounts for each deferred property and shall accrue interest only on the actual amount of taxes advanced to the county. [1963 c.569 §24; 1967 c.335 §35; 1967 c.494 §1; 1971 c.572 §2; 1977 c.160 §6; 1979 c.678 §2; 1980 c.19 §8; 1983 c.550 §14; 1999 c.1097 §4; 2001 c.184 §2; 2001 c.753 §27; 2011 c.723 §6]