A U.S. Government T-bond matures in 21 years and has a face value of $100. The bond has a coupon rate of 3% paid semi-annually (the next coupon is due in 6 months). The yield on the bond is 9%. If coupons are re-invested at 3.7033% per annum, then how much interest is earned on re-invested coupons over the life of the bond? Calculate the interest as a percentage of the total cash flows received at maturity by the bondholder. Responses 18% 18% 19% 19% 16% 16% 17%