Mostrar tabla de datos
| 1970 | 66,28 Mt | 1989 | 81,11 Mt | 2008 | 57,84 Mt |
| 1971 | 67,93 Mt | 1990 | 72,33 Mt | 2009 | 51,7 Mt |
| 1972 | 70,06 Mt | 1991 | 68,43 Mt | 2010 | 52,35 Mt |
| 1973 | 74,88 Mt | 1992 | 61,72 Mt | 2011 | 51,44 Mt |
| 1974 | 76,92 Mt | 1993 | 62,71 Mt | 2012 | 47,65 Mt |
| 1975 | 78,42 Mt | 1994 | 62,46 Mt | 2013 | 44,8 Mt |
| 1976 | 82,39 Mt | 1995 | 62,37 Mt | 2014 | 44,83 Mt |
| 1977 | 86,28 Mt | 1996 | 63,59 Mt | 2015 | 47,54 Mt |
| 1978 | 93,7 Mt | 1997 | 62,3 Mt | 2016 | 48,27 Mt |
| 1979 | 92,34 Mt | 1998 | 62,21 Mt | 2017 | 51,13 Mt |
| 1980 | 91,61 Mt | 1999 | 62,61 Mt | 2018 | 51,26 Mt |
| 1981 | 90,37 Mt | 2000 | 59,46 Mt | 2019 | 51,5 Mt |
| 1982 | 90,56 Mt | 2001 | 61,01 Mt | 2020 | 49,65 Mt |
| 1983 | 86,85 Mt | 2002 | 59,98 Mt | 2021 | 50,99 Mt |
| 1984 | 88,41 Mt | 2003 | 62,68 Mt | 2022 | 47,57 Mt |
| 1985 | 88,35 Mt | 2004 | 60,82 Mt | 2023 | 42,98 Mt |
| 1986 | 86,96 Mt | 2005 | 61,22 Mt | 2024 | 42,63 Mt |
| 1987 | 88,07 Mt | 2006 | 60,68 Mt | | |
| 1988 | 83,36 Mt | 2007 | 59,15 Mt | | |
Mostrar tabla de datos
| 1970 | 6,41 t | 1989 | 7,74 t | 2008 | 5,76 t |
| 1971 | 6,55 t | 1990 | 6,97 t | 2009 | 5,16 t |
| 1972 | 6,74 t | 1991 | 6,6 t | 2010 | 5,23 t |
| 1973 | 7,18 t | 1992 | 5,95 t | 2011 | 5,16 t |
| 1974 | 7,34 t | 1993 | 6,05 t | 2012 | 4,8 t |
| 1975 | 7,44 t | 1994 | 6,04 t | 2013 | 4,54 t |
| 1976 | 7,77 t | 1995 | 6,04 t | 2014 | 4,56 t |
| 1977 | 8,1 t | 1996 | 6,17 t | 2015 | 4,85 t |
| 1978 | 8,77 t | 1997 | 6,05 t | 2016 | 4,95 t |
| 1979 | 8,63 t | 1998 | 6,06 t | 2017 | 5,26 t |
| 1980 | 8,55 t | 1999 | 6,12 t | 2018 | 5,28 t |
| 1981 | 8,44 t | 2000 | 5,82 t | 2019 | 5,31 t |
| 1982 | 8,46 t | 2001 | 5,99 t | 2020 | 5,13 t |
| 1983 | 8,12 t | 2002 | 5,9 t | 2021 | 5,29 t |
| 1984 | 8,29 t | 2003 | 6,19 t | 2022 | 4,95 t |
| 1985 | 8,3 t | 2004 | 6,02 t | 2023 | 4,48 t |
| 1986 | 8,18 t | 2005 | 6,07 t | 2024 | 4,46 t |
| 1987 | 8,3 t | 2006 | 6,02 t | | |
| 1988 | 7,87 t | 2007 | 5,88 t | | |