For the privilege of occupying space in any parking facility in the City of Los Angeles, each occupant is subject to and shall pay a tax in the amount of ten percent (10%) of the parking fee. The tax imposed by this article shall be paid upon any occupancy on and after August 1, 1990, although such occupancy is pursuant to a contract, lease or other arrangement made prior to such date. Where the parking fee is paid, or charged or billed, or falls due on either a weekly, monthly or other term basis, the parking fee so paid, charged, billed or fallen due shall be subject to the tax herein imposed to the extent that it covers any portion of the period occurring on or after August 1, 1990 and such payment, charge, bill or parking fee due shall be apportioned on the basis of the proration of the number of days covered thereby. In computing the tax herein imposed, the fractional part of one cent shall be disregarded unless it amounts to one-half of one cent or more, in which case the amount shall be increased to the next highest cent. The tax herein imposed constitutes a debt owed by the occupant to the City, which is extinguished by payment to the operator or the City.