In the current situation where Greece defaults in Europe, I found this interesting website which actually shows how much debt each country has and how its calculated.
http://www.nationaldebtclocks.org/
Use the link below to watch the video that explains how the debt is calculated.
Source: http://www.nationaldebtclocks.org
http://www.nationaldebtclocks.org/
Use the link below to watch the video that explains how the debt is calculated.
Source: http://www.nationaldebtclocks.org