It's called "Level Term" life insurance which means your premiums remain the same each year for the entire "Policy Term".
You can choose level term insurance with a duration of coverage (Policy Term) of 10, 15, 20, 25 or 30 years, depending on your current age.
With Level Term your premiums stay level each year, and the amount of life insurance provided by your policy never decreases during the duration of your coverage period.