!!!Did you know this about Greece? Did you know that Greece is very low in ranking among 193 countries in the following 4 respects. #Waterways - km: 6.0 (Rank 107). #Age Structure: 15-24 years - %: 9.8 (Rank 188). #Birth rate - births/1,000 population: 8.8 (Rank 184). #Maternal mortality rate - deaths/100,000 live births: 3.0 (Rank 180).