The revolving loan component may be collected in advance for planning purposes over the entire district. However, the fee imposed pursuant to this section on any residential lot or parcel of real property may not exceed three dollars per month. Source: SL 1989, ch 388 , § 28; SL 1990, ch 364 , § 3; SL 1991, ch 375 , § 7; SL 1992, ch 320 , § 1.