|
| year | production | consumption |
| 1980 | | |
| 1981 | | |
| 1982 | | |
| 1983 | | |
| 1984 | | |
| 1985 | | |
| 1986 | | |
| 1987 | | |
| 1988 | | |
| 1989 | | |
| 1990 | | |
| 1991 | | |
| 1992 | | |
| 1993 | | |
| 1994 | | |
| 1995 | | |
| 1996 | | |
| 1997 | | |
| 1998 | | |
| 1999 | | |
| 2000 | | |
| 2001 | | |
| 2002 | | |
| 2003 | | |
| 2004 | | |
| 2005 | | |
| 2006 | 45,736.00 | 47,511.82 |
| 2007 | 46,153.78 | 47,647.41 |
| 2008 | 48,651.61 | 49,572.04 |
| 2009 | 49,096.95 | 50,394.37 |
| 2010 | 48,565.63 | 49,314.10 |
| 2011 | 51,697.30 | 53,053.14 |
|
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