|
Loading...
| year | production | consumption |
| 1986 | .50 | .60 |
| 1987 | .60 | .60 |
| 1988 | .60 | .70 |
| 1989 | .60 | .60 |
| 1990 | .60 | .60 |
| 1991 | .50 | .60 |
| 1992 | .70 | .70 |
| 1993 | .50 | .70 |
| 1994 | .40 | .50 |
| 1995 | .30 | .60 |
| 1996 | .50 | .90 |
| 1997 | .40 | 1.00 |
| 1998 | .40 | 1.10 |
| 1999 | .50 | 1.30 |
| 2000 | .60 | 1.40 |
| 2001 | .60 | 1.50 |
| 2002 | .60 | 1.60 |
| 2003 | .70 | 1.70 |
| 2004 | .50 | 1.70 |
| 2005 | .50 | 1.80 |
| 2006 | .70 | 1.90 |
| 2007 | .50 | 2.00 |
| 2008 | .30 | 1.90 |
| 2009 | .40 | 2.20 |
| 2010 | .50 | 2.30 |
| 2011 | .60 | 2.30 |
| 2012 | .30 | 2.70 |
|
|
