Mostrar tabla de datos
| 1970 | 21,35 Mt | 1989 | 32,76 Mt | 2008 | 20,88 Mt |
| 1971 | 21,37 Mt | 1990 | 40,04 Mt | 2009 | 17,44 Mt |
| 1972 | 23,24 Mt | 1991 | 36,53 Mt | 2010 | 22,22 Mt |
| 1973 | 26,55 Mt | 1992 | 26,6 Mt | 2011 | 22,34 Mt |
| 1974 | 29,58 Mt | 1993 | 21,89 Mt | 2012 | 21,23 Mt |
| 1975 | 32,16 Mt | 1994 | 22,56 Mt | 2013 | 23,64 Mt |
| 1976 | 33,77 Mt | 1995 | 20,6 Mt | 2014 | 22,75 Mt |
| 1977 | 35,14 Mt | 1996 | 21,63 Mt | 2015 | 21,02 Mt |
| 1978 | 37,49 Mt | 1997 | 21,18 Mt | 2016 | 20,59 Mt |
| 1979 | 39 Mt | 1998 | 19,01 Mt | 2017 | 21,96 Mt |
| 1980 | 40,46 Mt | 1999 | 17,42 Mt | 2018 | 23,65 Mt |
| 1981 | 41,53 Mt | 2000 | 17,82 Mt | 2019 | 15,46 Mt |
| 1982 | 41,69 Mt | 2001 | 18,25 Mt | 2020 | 12,13 Mt |
| 1983 | 41,43 Mt | 2002 | 17,52 Mt | 2021 | 12,93 Mt |
| 1984 | 40,4 Mt | 2003 | 19,55 Mt | 2022 | 15,02 Mt |
| 1985 | 39,57 Mt | 2004 | 20,05 Mt | 2023 | 11,47 Mt |
| 1986 | 38,56 Mt | 2005 | 20,07 Mt | 2024 | 10,65 Mt |
| 1987 | 37,93 Mt | 2006 | 19,43 Mt | | |
| 1988 | 36,01 Mt | 2007 | 23,03 Mt | | |
Mostrar tabla de datos
| 1970 | 15,7 t | 1989 | 20,89 t | 2008 | 15,62 t |
| 1971 | 15,52 t | 1990 | 25,52 t | 2009 | 13,07 t |
| 1972 | 16,69 t | 1991 | 23,39 t | 2010 | 16,68 t |
| 1973 | 18,89 t | 1992 | 17,35 t | 2011 | 16,83 t |
| 1974 | 20,86 t | 1993 | 14,65 t | 2012 | 16,05 t |
| 1975 | 22,5 t | 1994 | 15,42 t | 2013 | 17,93 t |
| 1976 | 23,46 t | 1995 | 14,34 t | 2014 | 17,31 t |
| 1977 | 24,23 t | 1996 | 15,28 t | 2015 | 15,98 t |
| 1978 | 25,68 t | 1997 | 15,13 t | 2016 | 15,65 t |
| 1979 | 26,56 t | 1998 | 13,71 t | 2017 | 16,67 t |
| 1980 | 27,39 t | 1999 | 12,53 t | 2018 | 17,89 t |
| 1981 | 27,91 t | 2000 | 12,76 t | 2019 | 11,65 t |
| 1982 | 27,82 t | 2001 | 13,15 t | 2020 | 9,13 t |
| 1983 | 27,46 t | 2002 | 12,7 t | 2021 | 9,71 t |
| 1984 | 26,6 t | 2003 | 14,27 t | 2022 | 11,13 t |
| 1985 | 25,88 t | 2004 | 14,71 t | 2023 | 8,37 t |
| 1986 | 25,03 t | 2005 | 14,81 t | 2024 | 7,76 t |
| 1987 | 24,44 t | 2006 | 14,43 t | | |
| 1988 | 23,05 t | 2007 | 17,18 t | | |