The following contingent expenses of the executive department shall be a charge upon the state treasury:
(1) Such sums of money as may be necessary to defray the expenses attendant on exchanging laws and documents with the several states of the union;
(2) Such sums of money as may be necessary to provide stationery for the governor's and secretary's offices, and postage and expressage on public letters and documents;
(3) An amount to pay for cleaning the public arms of the state and keeping them in good serviceable order; and
(4) Such sums of money as may be requisite to defray the expenses of all messengers and messages which it may be necessary for the governor to dispatch.