I am not entirely sure why there is such a discrepancy with so many countries but will look into it when I have the time (I've been really busy today helping fit the mast to a friend's Catamaran)
I can think of two possible reasons:
-Different structure of the bussiness sector, including workers -employers relations and unionization - this approach faces problems with europe, who AFAIK has relatively stronger unionization than Israel, for example.
- Different industries have different importances for capital and labor.
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