Empty Council owned properties 2016-2018

I wish to request, under the Freedom of Information Act, that you supply me with:

The number of council-owned empty properties in 2016, 2017, 2018 and currently

Devon County Council are not a housing authority and any surplus property is disposed of as soon as possible.  The numbers of empty property isn’t static each year so will vary on a monthly basis as we dispose of sites.  We therefore do not hold the information you are requesting.

The most recent position is published here: https://www.devon.gov.uk/accesstoinformation/information_request/council-buildings-empty-for-sale