There are now 12 countries on my list whose government debt sports negative 10-year yields. Switzerland is the master, with a 10-year yield of -0.92% followed by Germany, with a 10-year yield of -0.53%, down to Slovenia in 12th position with a 10-year yield barely in the negative of -0.04%. Japan is in 10th place.
https://wolfstreet.com/2019/08/06/financial-world-gone-nuts-15-trillion-negative-yielding-debt/