the three regions having the highest wage rates shown in table 16 also account for the largest concentration of the working-age population, led by the NCR with 14 percent,followed by region 4A(calabarzon) with 12.3 percent, and region 3 (Central Luzon) with 10.4 percent.Population growth rates in the NCR, calabarzon, and Central Luzon are above the national averages,a situation that can be traced to interregional migration.