$130.8 billion (31 December 2009 est.)
Debt - external:
$13.98 trillion (30 June 2010) country comparison to the world: 1 $13.75 trillion (31 December 2008)
note: approximately 4/5ths of US external debt is denominated in US dollars; foreign lenders have been willing to hold US dollar denominated debt instruments because they view the dollar as the world's reserve currency
Stock of direct foreign investment - at home:
$2.581 trillion (31 December 2010 est.) country comparison to the world: 1 $2.41 trillion (31 December 2009 est.)
Stock of direct foreign investment - abroad:
$3.597 trillion (31 December 2010 est.) country comparison to the world: 1 $3.367 trillion (31 December 2009 est.)
Exchange rates:
British pounds per US dollar: 1 (2010), 0.6504 (2010), 0.6494 (2009), 0.5302 (2008), 0.4993 (2007), 0.5418 (2006)