The labor force in Japan numbered 65.9 million people in 2010, which was 59.6% of the population of 15 years old and older, and amongst them, 62.57 million people were employed, whereas 3.34 million people were unemployed which made the unemployment rate 5.1%. The structure of Japan's labor market experienced gradual change in the late 1980s and continued this trend throughout the 1990s. The structure of the labor market is affected by: 1) shrinking population, 2) replacement of postwar baby boom generation, 3) increasing numbers of women in the labor force, and 4) workers' rising education level. Also, increase in numbers of foreign nationals in the labor force is foreseen.