In September $2019,$ the $10-$year Treasury interest rate, or yield, was $1\mathrm{.}47$ percent. On Aaa$-$rated and Baa$-$rated corporate debt, interest rates were $2\mathrm{.}98$ and $3\mathrm{.}87$ percent, respectively. Thus, the average default risk premiums on the Aaa$-$rated and Baa$-$rated corporate debt were?