In the table below are given the current prices for zero-coupon bonds with different maturities. The bonds are identical in every respect except for the time to maturity. All of the bonds will be redeemed at their par value of 100 upon redemption.

Years to maturity	Spot price
1	96.34
2	92.10
3	87.38
4	82.58

What are the percentages yields to maturity (YTMs) for the different bonds (to the nearest one decimal place)?

ii. What is the forward rate for a one-year investment starting two years from today (₂f₃)?

iii. What is the forward rate for a three-year investment starting one year from today (₁f₄)?