An item of plant costing $750 000 at 30 June 2017 has been proposed in order to improve facility performance. A life cycle costing analysis is required, with calculations and results shown for each stage as listed below. Expected income generated for the first five years of operation is shown below. These incomes are fixed by rental agreements and are not affected by inflation. Year (ending June) 2018 2019 2020 2021 2022 Income ($'000) 240 300 330 360 420 (a) Calculate the annual depreciation each year for tax purposes over the five years, using a depreciation rate of 10% p.a., prime cost basis.