Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Hanzi | Population (2005) | Area (Km2) |
| --- | --- | --- | --- |
| Qingxi | 清溪镇 | 20,000 | 2.9 |
| Ruyi | 如意镇 | 15,100 | 33.85 |
| Yintian | 银田镇 | 19,500 | 28 |
| Daping | 大坪乡 | 14,300 | 32 |
| Yongyi | 永义乡 | 10,600 | 24 |
| Shaoshan | 韶山乡 | 14,700 | 37.62 |
| Yanglin | 杨林乡 | 20,600 | 58.8 |
Question:
in 2005, how many divisions had at least a population of at least 15,000?
Answer:
4