The amount of the deduction from the amount of the annual contribution mentioned in the last paragraph of article L. 5212-9 is equal to the product of the number of employees, defined in accordance with the procedures laid down in article L. 5212-1, of the company occupying one or more jobs which fall into the categories requiring special conditions of aptitude mentioned in article D. 5212-25, multiplied by 17 times the gross hourly minimum growth wage.