From you proposal list view, you can filter your proposals and then export that data to CSV. Navigate to Proposals > View Proposals to get to the proposal list view.
To filter the proposal list view data, click the Filter Button in the upper right
To export your proposal list view data to CSV, after applying any filters, click the Export Button in the upper right
NOTE: The exported CSV of your proposal list view will include annual contract value (initial + recurring 12-month revenue)