(Bloomberg) -- For the first time in nearly two decades, investors can earn more than 5% on some of the safest debt securities in the world. That’s competitive with riskier assets like the S&P 500 Index.Most Read from BloombergNorth Korea Fires ICBM, Issues New Warnings to USWall Street Is Baffled by the Stock MarketThe Collapse of the UK Housing Market May Be ComingUnidentified Balloon Prompts Chinese City to Clear the SkiesDeSantis Is Trying to Turn Trump’s Biggest Win Into a LiabilityThere’s