On the first day of the term of court on or after January first and July first of each year, the presiding judge shall ascertain the qualifications of those jurors as have appeared pursuant to the writs of venire facias. No juror may be excused or disqualified except in accordance with existing law as determined by the presiding judge. The clerk of court shall maintain a list of all jurors who are excused or disqualified by the presiding judge and state the reasons given by the presiding judge for excusing or disqualifying the jurors. The sheriff of the county also shall report to the presiding judge the names of those persons who were not served with writs of venire facias, and that reasonable effort was made to obtain service. The clerk of court shall maintain a list of the jurors who were not served with the writs of venire facias and the reasons service was not effected.