(Unit:thousand people)
| Total number | Male | Female | gender unknown | |
|---|---|---|---|---|
| Total number | 329,200 | 184,500 | 130,900 | 13,800 |
| 0-4 years old | 12,400 | 7,800 | 4,600 | |
| 5-9 years old | 30,100 | 19,600 | 10,400 | |
| 10-14 years old | 33,100 | 20,000 | 12,600 | 400 |
| 15-19 years old | 33,600 | 21,400 | 12,000 | 200 |
| 20-29 years old | 79,800 | 45,500 | 33,500 | 80 |
| 30-39 years old | 50,700 | 27,700 | 22,100 | 1,000 |
| 40-49 years old | 37,700 | 21,300 | 16,200 | 200 |
| 50-59 years old | 22,500 | 12,400 | 9,600 | 400 |
| 60 – years old | 14,800 | 7,000 | 7,600 | 200 |
| Age unknown | 14,400 | 1,600 | 2,200 | 10,600 |
Source: Department of Health and Welfare for people with Disabilities, Minister’s Secretariat, MNW,
“Basic Survey of the Policy of the Welfare of Children(Adults) with Mental Retardation”,2000
