The rate of the tax imposed by this Part 1 is: $0.40 per month or part of a month for each Centrex local exchange access line or trunk line; and $4.00 per month or part of a month for every other telecommunications line, whether a residence, business, PBX local exchange, or other wired or wireless telecommunications line. City Code, 1950, art. 37, §76(1st sen.) 1966, art. 28, §95(a)(2nd cl.) 1976/83, art. 28, §55(a) Ord. 46-745 Ord. 47-108 Ord. 51-088 Ord. 53-902 Ord. 58-1743 Ord. 60-570 Ord. 68-112 Ord. 69-508 Ord. 70-839 Ord. 75-944 Ord. 79-1173 Ord. 79-1197 Ord. 82-818 Ord. 86-789 Ord. 99-441 Ord. 04-726 Ord. 06-247 Ord. 10-303 This section was amended by Ord. 10-303. Sections 3 and 4 of that Ordinance provide as follows Section 3. And be it further ordained, That the tax rates established in ... this Ordinance, as applied to members of the Maryland Hospital Association and members of the Maryland Independent College and University Association, may not be increased as long as the Memorandum of Understanding between the City and these Associations is in effect and the Associations are in compliance with the terms and conditions of the Memorandum of Understanding. Section 4. And be it further ordained, That the tax rates established in ... this Ordinance may not be increased for residential customers as long as the Memorandum of Understanding referred to in Section 3 of this Ordinance is in effect and the Associations are in compliance with its terms and conditions.