We’ve been hearing from many of our publishers around the world that you’d like to have the option to view your performance reports in currencies other than your payment currency. We’re happy to let you know that this is now possible with a new currency feature in your AdSense account. See AdSense Performance Reports In Your Currency [adsense.blogspot.com]
Please note that when viewing performance reports in a different currency from your payment currency, monetary values might not be completely accurate due to currency fluctuations. In addition, changing your reporting currency will not affect the currency in which you get paid.