| Country | Exchange rates |
| Canada | 
Canadian dollars (CAD) per US dollar -
0.9801 (2011 est.)
1.0302 (2010 est.)
1.1431 (2009)
1.0364 (2008)
1.0724 (2007) |
| Cape Verde |
Cape Verdean escudos (CVE) per US dollar -
79.65 (2011 est.)
83.26 (2010 est.)
79.38 (2009)
73.84 (2008)
81.235 (2007) |
| Cayman Islands |
Caymanian dollars (KYD) per US dollar -
0.83 (2011 est.)
0.83 (2010 est.) |
| Central African Republic |
Cooperation Financiere en Afrique Centrale francs (XAF) per US dollar -
473.7 (2011 est.)
495.28 (2010 est.)
472.19 (2009)
|
| Chad |
Cooperation Financiere en Afrique Centrale francs (XAF) per US dollar -
473.7 (2011 est.)
495.28 (2010 est.)
472.19 (2009)
447.81 (2008)
480.1 (2007) |
| Chile |
Chilean pesos (CLP) per US dollar -
470.9 (2011 est.)
510.25 (2010 est.)
560.86 (2009)
509.02 (2008)
526.25 (2007) |
| China |
Renminbi yuan (RMB) per US dollar -
6.455 (2011 est.)
6.7703 (2010 est.)
6.8314 (2009)
6.9385 (2008)
7.61 (2007) |
| Christmas Island |
Australian dollars (AUD) per US dollar -
0.9694 (2011)
1.0902 (2010)
1.2822 (2009)
1.2059 (2008)
1.2137 (2007) |
| Clipperton Island | void |
| Cocos (Keeling) Islands |
Australian dollars (AUD) per US dollar -
0.9694 (2011)
1.0902 (2010)
1.2822 (2009)
1.2059 (2008)
1.2137 (2007) |
| Colombia |
Colombian pesos (COP) per US dollar -
1,812.8 (2011 est.)
1,899 (2010 est.)
2,157.6 (2009)
2,243.6 (2008)
2,013.8 (2007) |
| Comoros |
Comoran francs (KMF) per US dollar -
349.7 (2011 est.)
371.46 (2010 est.) |
| Congo, Democratic Republic of the |
Congolese francs (CDF) per US dollar -
1,000 (2011 est.)
912 (2010 est.)
472.19 (2009)
559 (2008)
516 (2007) |
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