|
Loading...
| year | production | consumption |
| 1986 | .80 | 2.40 |
| 1987 | .60 | 3.80 |
| 1988 | .70 | 3.70 |
| 1989 | 1.00 | 4.10 |
| 1990 | .80 | 4.50 |
| 1991 | .90 | 5.60 |
| 1992 | .80 | 4.20 |
| 1993 | 1.00 | 5.90 |
| 1994 | 1.20 | 9.60 |
| 1995 | .80 | 7.00 |
| 1996 | 1.30 | 11.00 |
| 1997 | 1.20 | 14.00 |
| 1998 | 1.30 | 14.00 |
| 1999 | 1.30 | 17.00 |
| 2000 | 1.30 | 20.00 |
| 2001 | 1.20 | 17.00 |
| 2002 | 1.30 | 17.00 |
| 2003 | 1.40 | 16.00 |
| 2004 | 1.10 | 19.00 |
| 2005 | 1.20 | 21.00 |
| 2006 | 1.10 | 23.00 |
| 2007 | .80 | 26.00 |
| 2008 | .70 | 34.00 |
| 2009 | .80 | 27.00 |
| 2010 | .90 | 26.00 |
| 2011 | .70 | 24.00 |
| 2012 | .50 | 23.00 |
|
|
