The Commissioner of Finance shall keep an accurate account of the money paid in for premiums by each of the several groups of occupations or industries, and the expenses of administering the Government Insurance Fund, as well as the disbursements and expenses incurred on account of injuries or deaths of workmen and employees in each of said groups of occupations and industries; he shall also keep an account of premiums received from each employer; he shall also keep an account of payments and cost of injuries and deaths of the workmen and employees of each employer, and all other necessary accounts and statistics consistent with the efficient administration of a solvent Government Insurance Fund.