Subtotal count unique vales

[afountas]

I need to add a subtotal to this equation.

Goal is to create a dynamic count formula which will count the number of unique vales in a table column.

The SUBTOTAL column is the same as this Table2[DMA Rank],

So far I have this, subtotla part needs to be added.

=SUM(IF(FREQUENCY(Table2[DMA Rank],Table2[DMA Rank])>0,1))

Thanks,