Interesting, apparently there are many more countries who are more messed up fiscally then the USA.
Canada's messed up. Not quite as badly as the US, though.
US debt-to-GDP is a hair under 106%. Japan's is vastly in excess of 228%. I'm not sure why the WDC is using nonstandard numbers. To compute the real number, you need to sum the two percentages (public and external), but that includes a great many things not included in the canonical debt-to-GDP.
It's a bit moot anyway, since the number doesn't include unfunded liabilities, agency debt, and debt at all levels of government other than federal, which collectively dwarf the reported percentages.
I'm wondering if there is not an angle here to make a buck? Take those "moving " figure charts. mount em on an electronic board. Encase the unit in colorful plastic, make sure it has colorful lights, and sell the rights to someone like "Fisher-Price to market as a crib toy to lull little kids to sleep