|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 35.11 | 35.31 |
| 1987 | 38.55 | 32.25 |
| 1988 | 38.62 | 33.92 |
| 1989 | 40.62 | 35.74 |
| 1990 | 42.53 | 36.21 |
| 1991 | 46.12 | 39.15 |
| 1992 | 64.35 | 42.76 |
| 1993 | 64.35 | 54.66 |
| 1994 | 57.55 | 47.68 |
| 1995 | 56.05 | 54.41 |
| 1996 | 66.04 | 51.86 |
| 1997 | 67.53 | 58.29 |
| 1998 | 63.64 | 58.33 |
| 1999 | 58.17 | 53.69 |
| 2000 | 61.99 | 59.74 |
| 2001 | 66.43 | 63.48 |
| 2002 | 64.94 | 58.17 |
| 2003 | 65.57 | 62.04 |
| 2004 | 72.93 | 66.60 |
| 2005 | 72.54 | 75.24 |
| 2006 | 88.30 | 90.83 |
| 2007 | 89.83 | 93.42 |
| 2008 | 89.83 | 93.42 |
| 2009 | 73.02 | 100.00 |
| 2010 | 76.01 | 107.83 |
|
|
