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 | Islands Name | Area (sqmi) | Area (km 2 ) | Location | Population (2000) |
| --- | --- | --- | --- | --- | --- |
| 1.0 | Hawai ʻ i (Big Island) | 4028.0 | 10433.0 | Hawaii | 148,677 |
| 2.0 | Kodiak Island | 3588.0 | 9293.0 | Alaska | 13,913 |
| 3.0 | Puerto Rico | 3515.0 | 9104.0 | Puerto Rico | 3,808,610 |
| 4.0 | Prince of Wales Island | 2577.0 | 6675.0 | Alaska | 6,000 ≈ |
| 5.0 | Chichagof Island | 2080.0 | 5388.0 | Alaska | 1,342 |
| 6.0 | St. Lawrence Island | 1983.0 | 5135.0 | Alaska | 1,292 |
| 7.0 | Admiralty Island | 1684.0 | 4362.0 | Alaska | 650 |
| 8.0 | Nunivak Island | 1625.0 | 4209.0 | Alaska | 210 |
| 9.0 | Unimak Island | 1590.0 | 4119.0 | Alaska | 64 |
| 10.0 | Baranof Island | 1570.0 | 4065.0 | Alaska | 8,532 |
| 11.0 | Long Island | 1401.0 | 3629.0 | New York | 7,448,618 |
| 12.0 | Revillagigedo Island | 1145.0 | 2965.0 | Alaska | 13,950 |
| 13.0 | Kupreanof Island | 1086.0 | 2813.0 | Alaska | 785 |
| 14.0 | Unalaska Island | 1051.0 | 2722.0 | Alaska | 1,759 |
| 15.0 | Nelson Island | 843.0 | 2183.0 | Alaska | 1,065 |
| 16.0 | Kuiu Island | 758.0 | 1962.0 | Alaska | 10 |
| 17.0 | Maui | 727.0 | 1883.0 | Hawaii | 117,644 |
| 18.0 | Afognak | 698.0 | 1809.0 | Alaska | 169 |
| 19.0 | Umnak | 692.0 | 1793.0 | Alaska | 39 |
| 20.0 | O ʻ ahu | 597.0 | 1545.0 | Hawaii | 876,151 |
| 21.0 | Kaua ʻ i | 552.0 | 1430.0 | Hawaii | 58,303 |
| 22.0 | Atka Island | 410.0 | 1061.0 | Alaska | 95 |
| 23.0 | Attu Island | 346.0 | 896.0 | Alaska | 20 |
| 24.0 | Etolin Island | 336.0 | 870.0 | Alaska | 15 |
| 25.0 | Adak Island | 280.0 | 725.0 | Alaska | 316 |
| 26.0 | Montague Island | 279.0 | 722.0 | Alaska | 0 |
| 27.0 | Moloka ʻ i | 260.0 | 673.0 | Hawaii | 7,404 |
Question:
What is the smallest rank number of those used to rank the islands? 
Answer:
1.0