The following numbers are from the CIA factbook

 https://www.cia.gov/library/publications/the-world-factbook/rankorder/20...

They refer to  public and private debt owed to nonresidents repayable in internationally accepted currencies, goods, or services. These figures are calculated on an exchange rate basis, i.e., not in purchasing power parity (PPP) terms.

Overall external debt in  % of  GDP/Public debts

Germany                    190%/  83%

Italy                              151%/  120%

France                         263%/  82%

USA                              100%/ 65%

United Kingdom         453%/ 72%

switzerland                  290%/ 40%

China                              5%/16%

Taiwan                        10%/33%

What the hell is the meaning of these numbers?     The percentage of public debts can be higher thant the percentage over overall external debt, because the public debt can be internatl!