Direct sales taxes imposed by the city shall not become effective unless approved by the majority of the votes cast at a citywide election. This requirement does not apply to fees or charges imposed by the City for services or products provided by the City; building permit charges or system development charges; franchise fees including but not limited to cable, utility and telecommunications franchise fees, and any other fee or charge which is unrelated to the sale of goods or services to the public by the City. Taxes and tax increases approved by the City prior to January 1, 2002 shall not be subject to the voter approval requirement.