To save for retirement, Karla Harby put $675 each month into an ordinary annuity for 19 years. Interest was compounded monthly.

To save for retirement, Karla Harby put $675 each month into an ordinary annuity for 19 years. Interest was compounded monthly. At the end of the 19 years, the annuity was worth $271,800.

What annual interest rate did she receive______?

(Round to two decimal places as needed.)