Create a data model by loading each tab as a single table and by linking those fields as per your business requirement like Country, Year or month fields.
adding (concatenating?) all tabs into one table would be difficult as you have a lot of specific fields, thus that one table would have a lot of blank fields.
If, like here, you have fields with the same name, but different contents, between different tables, you can avoid the automatic linking QlikView does by renaming the fields (either qualify them with the table name, but that can be tricky, I would not suggest to do so, or just use the AS option and enter another name.
