!!!Did you know this about Greece? Did you know that Greece is among the top 10 of the 193 UN countries in the following 7 respects. #Mothers mean age at first birth - years: 31.2 (Rank 1). #Unemployment- youth ages 15-24 - %: 55.3 (Rank 2). #Physicians density - physicians/1,000 population: 6.04 (Rank 3). #Age Structure: 65 and above - %: 20.1 (Rank 6). #Median age - years: 43.5 (Rank 7). #Crude oil - imports per capita - bbl/day: 0.04 (Rank 8). #% Irrigated land: 11.78 (Rank 10).