My company has doing data entry already for more than 5 years, working with more then 50 partners from an international company Expense Reduction Analyst.
Languages already done German, English, French, Swedish, Danish, Dutch, Indonesia and Norwegian.
The time needed is depending on the fact of the quality of the the delivered pdf, jpeg, tiff or other formats.
In general 350 cells entered / hour.( depending on the type of data, quality of data, and the layout of the spreadsheet).
Regards,
E. Klein Heerenbrink.