Consider that you are withdrawing the following amounts from your bank account: $1000 at Year 0, $800 at year 1, $600 at year 2, $400 at year 3, $200 at year 4, $0 on year 5. Later, you start depositing to your account as follows: $C at year 6, $2C at year 7, $3C at year 8, $4C at year 9 and $5C at year 10. What value of "C" make the deposit series equivalent to the withdrawal series at an interest rate of 9% compounded annually?