The same numbers for the 1984-2009 period are: Japan 61.7%, Germany 59.7%, United States 108.8%. A very large difference.
http://www.google.com/publicdata?ds=wb-wdi&met=ny_gdp_mk...
JP 1.347T (1985) > 4.991T (2008) = 3.7x
USA 4.188T (1985) > 14.591T (2008) = 3.48xhttp://www.google.com/publicdata?ds=wb-wdi&met=ny_gdp_mk... (beware that 2009 is missing, I guess the definite numbers may not be there yet).
I think it is fair to say that Japanese economy is in a really bad shape, although the explanation is not as simplistic as the one given by techrunch, obviously. Paul Krugman has a few papers on this which are well know, although maybe not up to date anymore (http://web.mit.edu/krugman/www/japtrap.html).
My sources: http://data.worldbank.org/sites/default/files/countries/en/g...
http://data.worldbank.org/sites/default/files/countries/en/j...
http://data.worldbank.org/sites/default/files/countries/en/u...