| Year | Value (kg/ha) |
|---|---|
|
2009 |
638 |
|
2005 |
504 |
|
2004 |
494 |
|
2003 |
800 |
|
2002 |
792 |
|
2001 |
798 |
|
2000 |
751 |
|
1999 |
750 |
|
1998 |
749 |
|
1997 |
755 |