GDP (PPP) 2006 estimate - Total $1.149 trillion (12th) - Per capita $11,249 (63rd) GDP (nominal) 2006 estimate - Total $840.012 billion (short scale) (14th) - Per capita $8,066 (55th)

In 2013 the GDP - per capita (PPP) in Romania was 14 400 US $.

Here is a list of the richest countries

Luxembourg (GDP per capita: $119,719)

Norway (GDP per capita: $86,362)

Switzerland (GDP per capita: $83,832)

Ireland (GDP per capita: $81,477)

Iceland (GDP per capita: $78,181)

Qatar (GDP per capita: $65,062)

The United States of America (GDP per capita: $64,906)

Denmark (GDP per capita: $63,434)

Singapore (GDP per capita: $62,690)

Australia (GDP per capita: $58,824)

so I know the USA is the richest country but this is the richest countries by GDP.

The wealthiest nations of southeast Asia in terms of GDP PPP per capita are Indonesia, Thailand and Phillipines. For a full list visit en.wikipedia.org/wiki/List_of_Asian_and_Pacific_countries_by_GDP_(PPP)#Southeast_Asia