The current term structure of zero coupon bonds is given by: Maturity: One year (5%), Two years (5.5%) & Three years (6%) annual yields. William purchases a three-year zero coupon bond that has a par value of $1,000. One year later he decides to sell this bond, at which time the term structure of zero coupon bonds has changed to: Maturity: One year (4.3%), Two years (5%) & Three years (5.7%) annual yields. Find Williams annual rate of return on this investment. Show all workings. Instructions for using financial calculator if possible.