In each judicial district, there must be the following number of judges of the district court:
(1) in the 2nd, 7th, 16th, 20th, and 21st districts, two judges each;
(2) in the 1st, 8th, and 18th districts, four judges each;
(3) in the 4th and 11th districts, five judges each;
(4) in the 13th district, 10 judges; and
(5) in all other districts, one judge each.