if you drawdown all money in 2011 you will receive trs to the full extent at the current rates until 31/12/2017.
if you drawdown partial funds in 2011 and some in 2012.
i am unsure of what will happen, it depends on how your bank reports to the revenue.
1st way, you will receive trs at the current rates on all balances until 31/12/2017
2nd way, you will receive trs at the current rates on the balances drawndown in 2011 until 31/12/2017,
and you will receive trs at a lower rate of TRS at a rate of 10% on a ceiling of 3,000 up to 31/12/2017 for the balances drawn down in 2012.