Big Construction Company signs a contract on 1 July 2019, agreeing to build a warehouse for Buyer Corporation at a fixed contract price of $10 million. Buyer Corporation will be in control of the asset throughout the construction process. Big Construction Company estimates that construction costs will be as follows: $2.5 million $4 million $1.5 million The contract provides that Buyer Corporation will make payments on 31 December each year as follows: 2019 $2 million 2010 $5 million 2021 $3 million The contract is completed and accepted on 31 December 2021 Assume that actual costs and cash collections coincide with expectations and that cost (an input measure) is used as the basis for assessing progress on the construction contract. Big Construction Company has a financial year ending 31 December. Required Assuming that the level of progress can be reliably measured: a) Determine the percentage of completion for 2019, 2020 and 2021