The Church does not maintain historical records for most callings. The Church Directory of Leaders (CDOL) does contain some historical information for members who have been unit leaders, but those records are quite incomplete in that "regular callings" aren't listed in that CDOL history.
So to answer your question, it's unlikely you'll be able to find any specific data regarding what previous callings you have had, or what dates you served in any particular calling. I'd also love to have this information available for myself, but unfortunately it's not available.