At least 90 percent of the balance deposited to the credit of the Highway Users Tax Account in the Transportation Tax Fund by the 28th day of each month shall be apportioned by the State Controller by the second working day thereafter, except for June, in which case the apportionment shall be made the same day. These apportionments shall be made as provided for in Sections 2104 to 2122, inclusive. If information is not available to make the apportionment as required, the apportionment shall be made on the basis of the information of the previous month. Amounts not apportioned shall be included in the apportionment of the subsequent month.