Approximate wait for F1 Green Card in Ireland

[ES1991]

Hi all,

I'm wondering does anyone have an estimate of the wait times are like for an Irish person applying for a US green card under the F1 preference category (unmarried son over 21 of a US citizen) please?

It's my understanding that the demand for this type of US visa in Ireland is very very low, but I have no idea of an approximate timescale?

Thanks

[inadmissible]

seven years