The following balance sheet information is available (amounts in thousands of dollars and duration in years) for a financial institution: T-notes Amount $90 Duration 0.50 T-notes $55 0.90 T-bonds (5 year) $176 x Loans $2724 7.00 Deposits $2092 1.00 Interbank borrowings Equity $238 0.01 $715 Treasury Bonds are five-year maturities paying 6 per cent coupon semi-annually. The sum of its time-weighted PV of cash flows is $773.18. What is the average duration of the liabilities?