At the time the Mayor submits to the Council the estimated assessment roll under § 47-815, he shall also submit the following:
(1) The total aggregate assessed value of real property exempt from the real property tax levied in the District for the current fiscal year by major class or type of exempt status and the tax that would have been paid during such fiscal year had such property not been exempt; and
(2) The estimated total aggregate assessed value of real property exempt from the real property tax levied in the District by major class or type of exempt status and the tax that would be paid during the fiscal year under the real property tax rate or rates proposed by the Mayor pursuant to § 47-815.