Just a quick update,
We now have a backing report that you can access from Account Settings >> Company Settings. Just click the magnifying glass adjacent to the ledger count.
There are two tables in this report, the first one shows where the postings have been made (i.e. to which nominal account). The second table shows the activity over the last year, i.e. when the entries were created.
Please note: that the account size is determined by when entries on QuickFile were made rather than the date of those entries. For example if you upload a CSV bank statement today for entries in 2013 they will form part of the nominal ledger count for the last 12 months.