When the Australian government issues government bonds during a tender, the cumulative aggregate/total demand by bidders is the following:

Yield	Total cumulative aggregate demand (in AUD million face value)
2.20%	2,200
2.15%	2,050
2.10%	1,950
2.05%	1,900
2.00%	1,820

Calculate the ratio that will be used to calculate the allocation of government bonds to the bidders who bid the cut-off yield. Explain in details the process you have followed to calculate the ratio.