Table Display - Suppress repeated values

We have a BEx report which is in a tabular form.

i.e only columns and no rows.

We need to suppress the repeated values.

Report has the folowing columns.

{Purchase Order} {PO Amt} {Invoice No} {Invoice Amt}

This is how it is showing....

V1 1001 10,000 200101 2,000

-

10,000 200102 5,000

-

10,000 200103 3,000

This is how we want it to show....

V1 1001 10,000 200101 2,000

-

200102 5,000

-

200103 3,000

Is there a way to do this.