Good question. Google knows all. 
"(Reuters) - Switzerland's central bank says it is determined to prevent the country's currency climbing too high against the euro, but there are doubts in the options market its resolve will hold during the latest chapter of the euro zone debt crisis. Risk reversals show investors are building up bets in the options market for a break of the floor of 1.20 francs per euro the Swiss National Bank set last year to shield the economy from the flood of safe-haven flows due to Europe's crisis.
The SNB has intervened regularly to hold down the value of its currency. The bank's Chairman Thomas Jordan told a news conference on Thursday it was ready to buy foreign currency in "unlimited quantities" and "take further measures at any time." Reuters
Currency exchange is baffling to all but the experts. And they get it wrong as well.
Ian
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'87 Carrera Cab
----- “Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.” A. Einstein -----
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