| Year | Production | Consumption | Import | Export |
| 2003 | 7132 | 6649 | 1080 | 236 |
| 2004 | 6902 | 7388 | 1278 | 71 |
| 2005 | 7061 | 7842 | 1399 | 122 |
| 2006 | 7622 | 7879 | 777 | 96 |
| 2007 | 8346 | 7815 | 433 | 626 |
| 2008 | 8451 | 8075 | 649 | 680 |
| 2009 | 8408 | 7642 | 255 | 749 |
| 2010 | 10,058 | 8441 | 222 | 1524 |
| 2011 | 10,105 | 9257 | 471 | 931 |
| 2012 | 9698 | 9379 | 615 | 528 |
| 2013 | 10,059 | 9690 | 484 | 450 |