It depends. If the payment received consisted only of premiums paid, then there may not be a taxable amount. In many cases, you also receive accumulated earnings on the premiums.
Check with the company to see if they have a history of your transactions to help you determine whether the entire amount or a lesser amount should be taxable and whether they issued you a 1099-R, 1099-INT, or other tax form.
Please see this help article for more information.
Please see also this thread for another discussion of this issue.