|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | | |
| 1987 | | |
| 1988 | | |
| 1989 | | |
| 1990 | | |
| 1991 | | |
| 1992 | .00 | .00 |
| 1993 | .00 | .00 |
| 1994 | .00 | .00 |
| 1995 | | .19 |
| 1996 | | .16 |
| 1997 | | .29 |
| 1998 | | .29 |
| 1999 | .00 | .26 |
| 2000 | .00 | .23 |
| 2001 | .00 | 1.22 |
| 2002 | .00 | .16 |
| 2003 | .00 | .20 |
| 2004 | .00 | .21 |
| 2005 | | .22 |
| 2006 | | .22 |
| 2007 | | |
| 2008 | | .25 |
| 2009 | | .22 |
| 2010 | | .25 |
|
|
