| # | Country | Value |
|---|---|---|
| #1 | New Zealand | 10.0k kg/ha |
| #2 | Ireland | 8.1k kg/ha |
| #3 | United Kingdom | 7.3k kg/ha |
| #4 | Zambia | 7.1k kg/ha |
| #5 | Germany | 7.1k kg/ha |
| #6 | Namibia | 7.1k kg/ha |
| #7 | Denmark | 7.0k kg/ha |
| #8 | The Netherlands | 7.0k kg/ha |
| #9 | Egypt | 6.8k kg/ha |
| #10 | Belgium | 6.6k kg/ha |