|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 109.92 | 108.14 |
| 1987 | 103.06 | 107.90 |
| 1988 | 105.64 | 99.80 |
| 1989 | 110.15 | 99.11 |
| 1990 | 116.55 | 91.21 |
| 1991 | 112.08 | 102.30 |
| 1992 | 111.13 | 109.08 |
| 1993 | 138.75 | 123.51 |
| 1994 | 141.55 | 124.90 |
| 1995 | 122.52 | 120.44 |
| 1996 | 154.25 | 127.77 |
| 1997 | 172.64 | 102.73 |
| 1998 | 125.89 | 94.30 |
| 1999 | 122.95 | 86.75 |
| 2000 | 156.15 | 96.85 |
| 2001 | 159.22 | 82.07 |
| 2002 | 114.14 | 62.09 |
| 2003 | 144.31 | 84.95 |
| 2004 | 93.64 | 46.68 |
| 2005 | 151.45 | 70.46 |
| 2006 | 100.61 | 81.75 |
| 2007 | 103.44 | 89.60 |
| 2008 | 101.54 | 92.57 |
| 2009 | 105.28 | 98.76 |
| 2010 | 103.51 | 95.28 |
|
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