The Paris-based company said its latest monthly leading indicator for the OECD as a whole - covering 33 countries - was at its highest level since June 2011.
G20 leaders in their meeting in April 2009 asked the tax havens to end the era of banking secrecy.
The OECD study concluded that cyber attacks would be ubiquitous in future wars.
The average French person sleeps almost nine hours every night.
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