 billion that's a record amount but as we're talking about this again the impact didn't last for a very long time because 160 was the level that they weren't happy about so they intervened but now it's back to 160 again and that's because even a large burst of yen buying is nothing compared to the seven and a half trillion dollars that change hands every day in the foreign exchange market so a lot of observation and speculation in the currency market at the moment