|
| year | production | consumption |
| 1980 | | |
| 1981 | | |
| 1982 | | |
| 1983 | | |
| 1984 | | |
| 1985 | | |
| 1986 | | |
| 1987 | | |
| 1988 | | |
| 1989 | | |
| 1990 | | |
| 1991 | | |
| 1992 | | |
| 1993 | 93,895.98 | 78,854.95 |
| 1994 | 84,816.24 | 72,771.29 |
| 1995 | 81,937.01 | 71,435.29 |
| 1996 | 84,021.48 | 71,130.39 |
| 1997 | 81,036.42 | 70,029.84 |
| 1998 | 74,437.98 | 64,519.39 |
| 1999 | 65,182.98 | 56,045.92 |
| 2000 | 71,828.81 | 67,044.78 |
| 2001 | 72,869.40 | 64,751.97 |
| 2002 | 69,838.04 | 62,490.03 |
| 2003 | 70,444.31 | 64,165.54 |
| 2004 | 68,122.84 | 60,413.28 |
| 2005 | 68,371.96 | 62,148.31 |
| 2006 | 69,338.70 | 63,511.88 |
| 2007 | 69,033.35 | 64,250.42 |
| 2008 | 66,359.14 | 59,851.10 |
| 2009 | 62,189.10 | 56,206.86 |
| 2010 | 60,857.51 | 56,885.88 |
| 2011 | 59,912.83 | 54,510.40 |
|
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