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:
| Rank | Nation | Gold | Silver | Bronze | Total |
| --- | --- | --- | --- | --- | --- |
| 1 | New Caledonia | 120 | 107 | 61 | 288 |
| 2 | Tahiti | 60 | 42 | 42 | 144 |
| 3 | Papua New Guinea | 48 | 25 | 48 | 121 |
| 4 | Fiji | 33 | 44 | 53 | 130 |
| 5 | Samoa | 22 | 17 | 34 | 73 |
| 6 | Nauru | 8 | 10 | 10 | 28 |
| 7 | Tonga | 4 | 6 | 10 | 20 |
| 8 | Micronesia | 3 | 0 | 0 | 3 |
| 9 | Cook Islands | 2 | 6 | 4 | 12 |
| 10 | Wallis and Futuna | 2 | 3 | 7 | 12 |
| 11 | Vanuatu | 1 | 8 | 8 | 17 |
| 12 | Kiribati | 1 | 6 | 6 | 13 |
| 13 | Northern Mariana Islands | 1 | 0 | 0 | 1 |
| 14 | Guam | 0 | 6 | 5 | 11 |
| 15 | Solomon Islands | 0 | 5 | 17 | 22 |
| 16 | Niue | 0 | 3 | 3 | 6 |
| 17 | Tuvalu | 0 | 2 | 1 | 3 |
| 18 | Palau | 0 | 1 | 3 | 4 |
| 19 | American Samoa | 0 | 0 | 0 | 0 |
| 19 | Marshall Islands | 0 | 0 | 0 | 0 |
| 19 | Norfolk Island | 0 | 0 | 0 | 0 |
| 19 | Tokelau | 0 | 0 | 0 | 0 |
| Total | Total | 305 | 291 | 312 | 908 |
Question:
how many nations have at least 20 gold medals?
Answer:
5