Help with Filled Map - multiple value is location and colour saturation field

Hello,

I have an consultant database from an excel sheet and I have a field/column  called "Country expertise". The field is multi-entry where you can enter multiple countries. In the field if more than one country has been entered for a single consultant it will appear as follows in the same cell:

Zambia;

Jordan;

South Sudan;

What I am trying to do is use the Filled Map to display by  colour saturation to show the most countries mentioned. So if "Zambia" appeared the most times within Countries Expertise field/column it would have the highest saturation. 

Is there any way of for PowerBi to pickup the country names as separate values and count them? As when I put the field into Location and Color saturation it will up the raw field data. E.g(Zambia; Jordan; South Sudan

Thanks,