19 An economist gathers the following historical information on select economic variables:

Variable	Country 1	Country 2	Country 3
Percentage of population under age 15	14.5%	11.9%	25.2%
Percentage of population over age 65	22.2%	26.7%	7.8%
Population growth (annual) over last 10 years	1.2%	1.1%	1.0%
Net migration over last 10 years	High	High	Low

Based only on this information, which country is most likely to forecast the highest potential sustainable rate of economic growth?