|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 75.81 | 2.81 |
| 1987 | .87 | 5.61 |
| 1988 | .92 | 5.22 |
| 1989 | 1.03 | 5.23 |
| 1990 | .72 | 3.50 |
| 1991 | .54 | 6.20 |
| 1992 | 39.68 | 6.55 |
| 1993 | 40.28 | 6.91 |
| 1994 | 105.96 | 9.03 |
| 1995 | 101.20 | 4.16 |
| 1996 | 112.22 | 3.91 |
| 1997 | 86.08 | 4.31 |
| 1998 | 100.68 | 4.83 |
| 1999 | 104.00 | 33.06 |
| 2000 | 114.14 | 32.24 |
| 2001 | 121.27 | 36.14 |
| 2002 | 123.91 | 35.87 |
| 2003 | 139.34 | 37.52 |
| 2004 | 144.49 | 39.30 |
| 2005 | 149.41 | 23.17 |
| 2006 | 4.91 | 4.81 |
| 2007 | 3.88 | 7.85 |
| 2008 | 4.04 | 8.49 |
| 2009 | 5.36 | 5.36 |
| 2010 | 5.56 | 5.56 |
|
|
