(a) The commission shall make an annual report of its activities and file it with the county clerk on or before January 1 of each year.
(b) The report shall show in detail:
(1) the kind, character, and amount of work done in the district;
(2) the cost of the work; and
(3) the amount paid on order, the purpose for which paid, and other data necessary to show the condition of improvements made under the provisions of this chapter.