16. For the issue of a driver’s licence bearing one or more of classes 1 to 5 and one or more of the classes authorizing the driving of a motorcycle, the insurance contribution payable is the sum of the following amounts:
(1) the insurance contribution calculated under section 14;
(2) the insurance contribution obtained by adding together the insurance contributions for the months, including parts of months, during which the holder is authorized to drive, except for the last month. The insurance contribution for a month corresponds to the percentage, as determined in the second paragraph of section 15, of an amount equivalent to the annual insurance contribution provided for in paragraph 1 of section 13 for motorcycle classes, based on the year of licence issue and the total number of demerit points entered on the applicant’s record over a period of 2 years determined under the second paragraph of section 14.