Wicomico County shall distribute the hotel rental tax revenue as follows: a reasonable sum for hotel rental tax administrative costs, not to exceed 5%, to the general fund of the county; if the county authorizes a hotel rental tax rate of 6%: 7% of the revenue to the Salisbury Zoological Park; and 7% of the revenue to the Wicomico County Youth and Civic Center to be used for its improvement and renovation; and the remaining balance to the general fund of the county to underwrite the Wicomico County Convention and Visitors Bureau.