Mostrar tabla de datos
| 1970 | 314,61 Mt | 1989 | 422,87 Mt | 2008 | 464,98 Mt |
| 1971 | 329,27 Mt | 1990 | 426,06 Mt | 2009 | 413,81 Mt |
| 1972 | 347,37 Mt | 1991 | 424,89 Mt | 2010 | 423,63 Mt |
| 1973 | 369,53 Mt | 1992 | 423,05 Mt | 2011 | 414,5 Mt |
| 1974 | 372,06 Mt | 1993 | 416,3 Mt | 2012 | 394,45 Mt |
| 1975 | 355,88 Mt | 1994 | 410,75 Mt | 2013 | 361,71 Mt |
| 1976 | 382,55 Mt | 1995 | 434,91 Mt | 2014 | 342,98 Mt |
| 1977 | 371,55 Mt | 1996 | 429,85 Mt | 2015 | 353,74 Mt |
| 1978 | 378,94 Mt | 1997 | 433,3 Mt | 2016 | 349,17 Mt |
| 1979 | 394,89 Mt | 1998 | 442,47 Mt | 2017 | 345,68 Mt |
| 1980 | 397,65 Mt | 1999 | 449,36 Mt | 2018 | 340,37 Mt |
| 1981 | 385,87 Mt | 2000 | 454,32 Mt | 2019 | 332,56 Mt |
| 1982 | 377,69 Mt | 2001 | 453,68 Mt | 2020 | 295,21 Mt |
| 1983 | 373,35 Mt | 2002 | 460,96 Mt | 2021 | 330,35 Mt |
| 1984 | 378,83 Mt | 2003 | 480,76 Mt | 2022 | 331,01 Mt |
| 1985 | 378,57 Mt | 2004 | 492,16 Mt | 2023 | 304,31 Mt |
| 1986 | 380,42 Mt | 2005 | 493,07 Mt | 2024 | 299,23 Mt |
| 1987 | 399,98 Mt | 2006 | 487,52 Mt | | |
| 1988 | 404,74 Mt | 2007 | 480,32 Mt | | |
Mostrar tabla de datos
| 1970 | 5,85 t | 1989 | 7,46 t | 2008 | 7,85 t |
| 1971 | 6,09 t | 1990 | 7,51 t | 2009 | 6,95 t |
| 1972 | 6,39 t | 1991 | 7,49 t | 2010 | 7,08 t |
| 1973 | 6,75 t | 1992 | 7,45 t | 2011 | 6,91 t |
| 1974 | 6,75 t | 1993 | 7,33 t | 2012 | 6,55 t |
| 1975 | 6,42 t | 1994 | 7,23 t | 2013 | 6 t |
| 1976 | 6,87 t | 1995 | 7,65 t | 2014 | 5,69 t |
| 1977 | 6,64 t | 1996 | 7,56 t | 2015 | 5,87 t |
| 1978 | 6,75 t | 1997 | 7,62 t | 2016 | 5,81 t |
| 1979 | 7,01 t | 1998 | 7,78 t | 2017 | 5,76 t |
| 1980 | 7,05 t | 1999 | 7,9 t | 2018 | 5,66 t |
| 1981 | 6,83 t | 2000 | 7,98 t | 2019 | 5,57 t |
| 1982 | 6,68 t | 2001 | 7,96 t | 2020 | 4,97 t |
| 1983 | 6,6 t | 2002 | 8,07 t | 2021 | 5,59 t |
| 1984 | 6,7 t | 2003 | 8,38 t | 2022 | 5,61 t |
| 1985 | 6,69 t | 2004 | 8,51 t | 2023 | 5,16 t |
| 1986 | 6,72 t | 2005 | 8,48 t | 2024 | 5,08 t |
| 1987 | 7,07 t | 2006 | 8,35 t | | |
| 1988 | 7,15 t | 2007 | 8,17 t | | |