All lawyers over the age of seventy-five (75) years, and the judges of the Supreme Court, Court of Appeals and circuit, chancery and county judges, United States magistrates, judges of the bankruptcy courts, the judges of the federal courts, and federal administrative law judges are exempt from the payment of enrollment fees. Lawyers over the age of seventy-five (75) years and judges of the classes enumerated in this section shall be active members except that no judge shall be eligible to membership on the Board of Commissioners. Lawyers who have retired from the practice of law because of age, serious illness or permanent disability may be placed on inactive status and shall be exempt from the payment of enrollment fees.