Impossible Rob. We know what files there were since their references are recorded in the released CD. Very few are missing.
Well it surprised me to "OFFICIAL INQUIRY FILES and DOCUMENTS
ANOMALIES IN THE CASE FILE : THE CRECHE
Sitemap
This information belongs to the Ministério Público in Portimão, Portugal.
It was released to the public on 4 August 2008 in accordance with Portuguese Law
TRANSLATED FROM FRENCH SITE BY ANNAESSE
Please note: This page is not part of the official police files. It is an analysis of Anomalies in the Creche files, that can be seen here LINK
Sign-in/check-in Warner/Creche lists
The McCann case: anomalies in the case file
Since a small part of the case file - the DVD version was made accessible to the public, a great deal of ink has flowed. We note that it is necessary to be cautious as to its contents.
In fact, it is only 17% of the complete case file and certain details are only of interest in relation to the complete file and not taken out of their context."
So I have no idea how they worked out that percentage.