|
| year | production | consumption |
| 1980 | | 537.00 |
| 1981 | | 536.00 |
| 1982 | | 534.00 |
| 1983 | | 561.00 |
| 1984 | | 554.00 |
| 1985 | | 552.00 |
| 1986 | | 592.00 |
| 1987 | | 627.00 |
| 1988 | | 746.00 |
| 1989 | | 860.00 |
| 1990 | | 1,048.00 |
| 1991 | | 1,263.00 |
| 1992 | | 1,527.00 |
| 1993 | | 1,684.00 |
| 1994 | | 1,840.00 |
| 1995 | | 2,008.00 |
| 1996 | | 2,101.00 |
| 1997 | | 2,255.00 |
| 1998 | | 1,917.00 |
| 1999 | | 2,084.00 |
| 2000 | | 2,135.33 |
| 2001 | | 2,132.04 |
| 2002 | | 2,149.15 |
| 2003 | | 2,175.38 |
| 2004 | | 2,155.12 |
| 2005 | | 2,191.34 |
| 2006 | | 2,179.90 |
| 2007 | | 2,240.51 |
| 2008 | | 2,142.31 |
| 2009 | | 2,188.26 |
| 2010 | | 2,268.35 |
| 2011 | | 2,230.17 |
|
|