|
| year | production | consumption |
| 1980 | | 6,654.65 |
| 1981 | | 7,654.45 |
| 1982 | | 6,193.89 |
| 1983 | | 8,596.93 |
| 1984 | | 10,865.48 |
| 1985 | | 10,868.79 |
| 1986 | | 10,975.71 |
| 1987 | | 11,426.56 |
| 1988 | | 13,665.35 |
| 1989 | | 13,852.75 |
| 1990 | | 14,947.34 |
| 1991 | | 13,614.65 |
| 1992 | | 13,358.91 |
| 1993 | | 13,791.02 |
| 1994 | | 15,023.40 |
| 1995 | | 15,631.88 |
| 1996 | | 15,734.39 |
| 1997 | | 15,682.58 |
| 1998 | | 15,807.14 |
| 1999 | | 13,113.10 |
| 2000 | | 14,161.39 |
| 2001 | | 14,751.13 |
| 2002 | | 14,802.94 |
| 2003 | | 15,156.78 |
| 2004 | | 14,925.30 |
| 2005 | | 14,209.90 |
| 2006 | | 13,681.89 |
| 2007 | | 14,858.05 |
| 2008 | | 14,061.08 |
| 2009 | | 13,191.36 |
| 2010 | | 13,247.58 |
| 2011 | | 13,062.39 |
|
|
