The country's Reserve and National Prosperity funds stood at 3.068 trillion rubles ($129.67 billion) and 773.6 billion rubles ($32.7 billion), respectively, on April 1, 2008.

Accordingly, in April the Reserve Fund grew about 1 billion rubles ($42.27 million), and the National Prosperity Fund by 0.25 billion rubles ($10.57 million).

The funds were established on the basis of the Stabilization Fund, set up to accrue windfall oil revenue.

According to the Finance Ministry's investment formula, U.S. dollars account for 45% of the funds' foreign currency, euros make up 45%, and British pounds 10%.