Mostrar tabla de datos
| 1970 | 19,93 Mt | 1989 | 33,13 Mt | 2008 | 15,83 Mt |
| 1971 | 19,99 Mt | 1990 | 35,12 Mt | 2009 | 13,21 Mt |
| 1972 | 21,31 Mt | 1991 | 36,98 Mt | 2010 | 14,04 Mt |
| 1973 | 22,9 Mt | 1992 | 20,89 Mt | 2011 | 14,32 Mt |
| 1974 | 24,49 Mt | 1993 | 16,22 Mt | 2012 | 14,49 Mt |
| 1975 | 26,12 Mt | 1994 | 15,73 Mt | 2013 | 13,36 Mt |
| 1976 | 27,26 Mt | 1995 | 15,12 Mt | 2014 | 13,21 Mt |
| 1977 | 28,23 Mt | 1996 | 15,6 Mt | 2015 | 13,66 Mt |
| 1978 | 29,33 Mt | 1997 | 15,07 Mt | 2016 | 13,52 Mt |
| 1979 | 30,32 Mt | 1998 | 15,92 Mt | 2017 | 13,96 Mt |
| 1980 | 31,59 Mt | 1999 | 13,33 Mt | 2018 | 14,02 Mt |
| 1981 | 31,92 Mt | 2000 | 11,66 Mt | 2019 | 14,3 Mt |
| 1982 | 32,03 Mt | 2001 | 12,39 Mt | 2020 | 14,25 Mt |
| 1983 | 32,19 Mt | 2002 | 12,47 Mt | 2021 | 14,33 Mt |
| 1984 | 32,78 Mt | 2003 | 12,49 Mt | 2022 | 13,17 Mt |
| 1985 | 32,75 Mt | 2004 | 13,07 Mt | 2023 | 12,98 Mt |
| 1986 | 33,28 Mt | 2005 | 13,96 Mt | 2024 | 12,97 Mt |
| 1987 | 33,63 Mt | 2006 | 14,19 Mt | | |
| 1988 | 33,61 Mt | 2007 | 15,57 Mt | | |
Mostrar tabla de datos
| 1970 | 6,35 t | 1989 | 8,99 t | 2008 | 4,95 t |
| 1971 | 6,29 t | 1990 | 9,5 t | 2009 | 4,18 t |
| 1972 | 6,63 t | 1991 | 9,98 t | 2010 | 4,53 t |
| 1973 | 7,06 t | 1992 | 5,65 t | 2011 | 4,73 t |
| 1974 | 7,48 t | 1993 | 4,4 t | 2012 | 4,85 t |
| 1975 | 7,91 t | 1994 | 4,3 t | 2013 | 4,51 t |
| 1976 | 8,19 t | 1995 | 4,17 t | 2014 | 4,5 t |
| 1977 | 8,41 t | 1996 | 4,33 t | 2015 | 4,69 t |
| 1978 | 8,68 t | 1997 | 4,21 t | 2016 | 4,7 t |
| 1979 | 8,92 t | 1998 | 4,49 t | 2017 | 4,91 t |
| 1980 | 9,25 t | 1999 | 3,78 t | 2018 | 4,97 t |
| 1981 | 9,3 t | 2000 | 3,33 t | 2019 | 5,09 t |
| 1982 | 9,26 t | 2001 | 3,57 t | 2020 | 5,07 t |
| 1983 | 9,24 t | 2002 | 3,62 t | 2021 | 5,1 t |
| 1984 | 9,33 t | 2003 | 3,66 t | 2022 | 4,65 t |
| 1985 | 9,24 t | 2004 | 3,87 t | 2023 | 4,52 t |
| 1986 | 9,3 t | 2005 | 4,2 t | 2024 | 4,49 t |
| 1987 | 9,3 t | 2006 | 4,34 t | | |
| 1988 | 9,2 t | 2007 | 4,82 t | | |