Do you know where I can get an estimate of grape yield per vine?

Also I need a very hardy wine grape, suited to the Mediterranean.
The climate is typically Mediterranean, with hot, dry summers, warm
and sporadically wet autumns, and short, cool winters with adequate
rainfall. Nearly three-fourths of the total annual rainfall of about
600 millimetres (24 inches) falls between October and March; June,
July, and August are normally quite dry.

The temperature is very stable, the annual mean being 18ºC (64ºF) and
the monthly averages ranging from 12º C (54ºF) to 31ºC (88ºF). Winds
are strong and frequent; the most common are the cool northwesterly
(majjistral), the dry northeasterly (grigal, or gregale), and the hot
humid southeasterly (xlokk, or sirocco). The relative humidity is
consistently high and rarely falls below 40%.

I was planning on Malbec and maybe another red grape. As I am trying
to grow the field organically, the strength of the grape
is a major consideration.

Thanks in advance.