You are managing NYU's pension fund. In a perhaps irrational decision, the Math Department has chosen to run a separate pension with an unusual pi-themed distribution of payments. Your fund's liabilities for this Pi-Pension are:

Year	Cash Flow
1	$3M
2	$1M
3	$4M
4	$1M
5	$5M

By coincidence, yields at all maturities are currently equal to the mathematical constant tau (defined as two times pi), meaning that all yields and spot rates are equal to 6.28%.

You are very happy that you immunized the portfolio since over the next year yields decrease by 1% (to 5.28%) at all horizons. Compute the holding period return on your 5-year zero-coupon bonds over this one-year horizon.