| Country | Ascents | Between | |
|---|---|---|---|
| 1 | United Kingdom π¬π§ | 4 | 1st January 1989 β 1st January 1989 |
| 2 | Australia π¦πΊ | 3 | 1st February 1985 β 1st January 1990 |
| 3 | USA πΊπΈ | 2 | 1st January 1990 β 1st January 1992 |
2 ascents could not be assigned to a country.