The base fine amounts from city arrests shall be subject to distribution according to the following schedule:

With respect to any city arrest from a city which is not set forth in the above schedule, the county percentage shall apply. A county and city therein may, by mutual agreement, adjust these percentages. Where a county and a city have, prior to June 1, 1991, entered into an agreement to adjust the percentage specified in this section, or where a county and a city have entered into an agreement governing the distribution of revenue from parking penalties, those agreements shall remain in full force and effect until changed by mutual agreement.