The proposed budget shall be presented in a form as specified by ordinance and shall include all funds, revenues and reserves, shall be divided into categories, projects, and objects of expense and shall include supporting data deemed advisable by the county executive or required by ordinance or motion. The proposed budget shall indicate as to each category, project or object of expense the actual expenditures of the preceding fiscal year, the current year adjusted appropriations reflecting all budget modifications subsequent to original adoption, and requested appropriations for the next fiscal year. The appropriations included in the budget for the ensuing fiscal year shall not exceed the estimated revenues and reserves.