On the date of issuance, you bought a 10-year maturity, 3.75% semi-annual coupon T-bond. The bond then sold at YTM of 4.15%. Now, 4 years later, the similar T-bond sells at YTM of 3.5%. If you hold the bond now, what is your realized rate of return for the 4-year holding period? Show your work and explain.