High-skilled immigrants (consisting of the first three groups in Figure 2.5), are mainly from a limited number of countries (Figure 2.7). Immigrants from Japan, which is the largest foreign direct investor in Thailand, and to a lesser extent China dominate the number of immigrants over time. In 2015, more than 36 000 high-skilled immigrants from Japan and almost 19 000 from China together accounted for more than half of the number of high-skilled immigrants.