What are the countries' ages?

Here:
link

o3o

Axis:
Italy - 20
Germany - 20
Japan - Unknow but he looks like 21-22
Allies:
America - 19
England - 23
France - 26
Russia - Unknow but he looks like 23-24
China - Immortal 4000 Looks like 21
Others:
Estonia - 17
Finland - 20
Greece - 27
Iceland - 16-17
Korea - 15-16
Latvia - 15
Liechtenstein - Unknow but looks like 14
Lithuania - 19
Norway - Unknow but looks like 22-23 (I've picked him because he's one of my Fav Characters)
Poland - 19
Prussia - ~20
Sweden - 21
Switzerland - 18
Sealand - 12
Spain - 25
South Italy -22-23
Thailand - 22
Hungary - Unknow but looks like 21-22
Belarus - 19

Italy (Veneziano):
Feliciano Vargas, Age 20, 172 cm

Italy (Romano):
Lovino Vargas, Age 22-23

Germany
Ludwig Beilschmidt (Same last name as Prussia - brothers), Age 20, 180 cm

Japan
Honda Kiku, Age secret, 165 cm

America
Alfred F. Jones, Age 19, 177 cm

England
Arthur Kirkland, Age 23, 175 cm

France
Francis Bonnefoy, Age 26, 175 cm

China
Wang Yao, Age 4000 (he's immortal)

Russia
Ivan Braginski, Age unknown, 182 cm

Austria
Roderich Edelstein

Hungary
Elizaveta Héderváry

Spain
Antonio Fernandez Carriedo, Age 25

Switzerland
Vash Zwingli, Age 18

Poland
Feliks Łukasiewicz, Age 19

Lithuania
Toris Lorinaitis, Age 19

Latvia
Raivis Galante, Age 15

Estonia
Eduard Von Bock, Age 17

Korea
Im Yong Soo, Age 15-16

Turkey
Sadiq Annan

Greece
Heracles Karpusi, Age 27

Egypt
Gupta Muhammad Hassan

Sweden
Berwald Oxenstierna, Age 21

Finland
Tino Väinämöinen, Age 20

Prussia
Gilbert Beilschmidt

Canada
Matthew Williams, Age 19

Sealand
Peter Kirkland, Age 12

Belarus
Natalia (Natasha) Alfroskaya