850M euro, the proposed amount to be raised, would be on the order of 1% of Google's worldwide revenues. Google doesn't break down its revenues by country but i

850M euro, the proposed amount to be raised, would be on the order of 1% of Google's worldwide revenues. Google doesn't break down its revenues by country but it's hard to imagine it derives more than about 1/20 of the revenues from Spain. If we assume 1/20, which seems very generous to Spain, the amount to be raised amounts to about 20% of revenues in Spain. So, this seems very high to me? Is this amount annual, or decennial like how US spending and tax amounts are reported?