The number of deputies allowed the clerk of the district court may not exceed one chief deputy and up to:
(1) six deputies in counties having a taxable valuation of $30 million or more;
(2) four deputies in counties having a taxable valuation of $15 million or more and less than $30 million and having more than one district judge;
(3) two deputies in counties having a taxable valuation of $15 million or more and less than $30 million and having one district judge;
(4) one deputy in counties having a taxable valuation of less than $15 million.