|
Loading...
| year | production | consumption |
| 1980 | .00 | 6.70 |
| 1981 | .00 | 7.00 |
| 1982 | 1.00 | 7.10 |
| 1983 | 1.00 | 7.50 |
| 1984 | 2.00 | 7.20 |
| 1985 | 2.00 | 8.00 |
| 1986 | 2.00 | 8.40 |
| 1987 | 1.40 | 8.00 |
| 1988 | 1.30 | 7.20 |
| 1989 | 1.10 | 7.90 |
| 1990 | 1.20 | 8.20 |
| 1991 | 1.20 | 8.30 |
| 1992 | 1.40 | 8.40 |
| 1993 | 1.30 | 8.40 |
| 1994 | 1.20 | 8.10 |
| 1995 | 1.30 | 8.20 |
| 1996 | 1.00 | 7.90 |
| 1997 | .90 | 9.20 |
| 1998 | 1.60 | 9.50 |
| 1999 | 1.90 | 9.70 |
| 2000 | 1.50 | 11.00 |
| 2001 | 1.30 | 10.00 |
| 2002 | 1.00 | 10.00 |
| 2003 | 1.00 | 11.00 |
| 2004 | 1.00 | 7.10 |
| 2005 | 1.00 | 9.80 |
| 2006 | 1.00 | 9.30 |
| 2007 | 1.10 | 8.30 |
| 2008 | 1.10 | 7.70 |
| 2009 | .80 | 9.30 |
| 2010 | 1.00 | 8.80 |
| 2011 | 1.00 | 9.30 |
| 2012 | 1.00 | 9.30 |
| 2013 | 1.00 | 9.00 |
|
|