Forex is the largest financial market in the world. In April 2004 its average turnover reached 1.9 trillion dollars per day, that is:

 

11x average turnover of all exchanges in the world ($167 billion);
40x average NYSE turnover - the largest exchange in the world ($46 billion);
$300 a day for every citizen of Earth.
In April 2007 the average turnover reached 3.2 billion dollars per day (approx. 70% growth over April 2004).

 

Main markets: USA, Great Britain and Japan. Great Britain and the US make over 50% of all trade volume on Forex. The highest activity is observed during simultanoius work hours of major markets.