The text and table show the population distribution by age groups in Voronezh in 2012. Calculate the sum of the 'Younger than working age' and 'Older than working age' groups, and compare it to the 'Working age' group. State which group is the largest.

Calculation:

• Population younger than working age: 123.8 thousand people
• Population older than working age: 244.8 thousand people
• Sum of younger and older than working age: 123.8 + 244.8 = 368.6 thousand people
• Population of working age: 622.7 thousand people

Comparison: The 'Working age' group (622.7 thousand people) is the largest, as it is greater than the combined population of those younger and older than working age (368.6 thousand people).