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: 0.6388 (2010), 0.6494 (2009), 0.5302 (2008), 0.4993 (2007), 0.5418 (2006)

Canadian dollars per US dollar: 1.0346 (2010), 1.1431 (2009), 1.0364 (2008), 1.0724 (2007), 1.1334 (2006)

Chinese yuan per US dollar: 6.7852 (2010), 6.8314 (2009), 6.9385 (2008), 7.61 (2007), 7.97 (2006)

euros per US dollar: 0.755 (2010), 0.7198 (2009), 0.6827 (2008), 0.7345 (2007), 0.7964 (2006)

Japanese yen per US dollar: 1.0346 (2010), 1.1548 (2009), 1.0364 (2008), 1.0724 (2007), 1.1334 (2006), 87.78 (2010), 93.57 (2009), 103.58 (2008), 117.99 (2007), 116.18 (2006)

(Source: website of U.S. Central Intelligence Agency)