Mostrar tabla de datos
| 1970 | 24,15 Mt | 1989 | 46,51 Mt | 2008 | 32,23 Mt |
| 1971 | 24,18 Mt | 1990 | 56,12 Mt | 2009 | 27,98 Mt |
| 1972 | 25,8 Mt | 1991 | 54,83 Mt | 2010 | 26,64 Mt |
| 1973 | 27,97 Mt | 1992 | 44,9 Mt | 2011 | 29,47 Mt |
| 1974 | 30,15 Mt | 1993 | 39,39 Mt | 2012 | 32,28 Mt |
| 1975 | 32,66 Mt | 1994 | 34,51 Mt | 2013 | 33,21 Mt |
| 1976 | 33,66 Mt | 1995 | 33,88 Mt | 2014 | 34,72 Mt |
| 1977 | 34,89 Mt | 1996 | 28,4 Mt | 2015 | 34,52 Mt |
| 1978 | 36,81 Mt | 1997 | 27,42 Mt | 2016 | 34,42 Mt |
| 1979 | 38,22 Mt | 1998 | 27,38 Mt | 2017 | 34,23 Mt |
| 1980 | 40,28 Mt | 1999 | 27,39 Mt | 2018 | 34,76 Mt |
| 1981 | 41,49 Mt | 2000 | 28,79 Mt | 2019 | 36,98 Mt |
| 1982 | 42,27 Mt | 2001 | 27,72 Mt | 2020 | 35,41 Mt |
| 1983 | 43,13 Mt | 2002 | 27,49 Mt | 2021 | 37,42 Mt |
| 1984 | 43,91 Mt | 2003 | 29,78 Mt | 2022 | 39,68 Mt |
| 1985 | 44,64 Mt | 2004 | 29,5 Mt | 2023 | 41,75 Mt |
| 1986 | 45,51 Mt | 2005 | 31,22 Mt | 2024 | 38,89 Mt |
| 1987 | 46,48 Mt | 2006 | 31,94 Mt | | |
| 1988 | 46,38 Mt | 2007 | 28,92 Mt | | |
Mostrar tabla de datos
| 1970 | 4,67 t | 1989 | 6,57 t | 2008 | 3,68 t |
| 1971 | 4,58 t | 1990 | 7,82 t | 2009 | 3,13 t |
| 1972 | 4,78 t | 1991 | 7,54 t | 2010 | 2,94 t |
| 1973 | 5,09 t | 1992 | 6,08 t | 2011 | 3,21 t |
| 1974 | 5,39 t | 1993 | 5,25 t | 2012 | 3,47 t |
| 1975 | 5,74 t | 1994 | 4,54 t | 2013 | 3,53 t |
| 1976 | 5,82 t | 1995 | 4,41 t | 2014 | 3,64 t |
| 1977 | 5,94 t | 1996 | 3,66 t | 2015 | 3,58 t |
| 1978 | 6,16 t | 1997 | 3,5 t | 2016 | 3,53 t |
| 1979 | 6,3 t | 1998 | 3,46 t | 2017 | 3,47 t |
| 1980 | 6,54 t | 1999 | 3,43 t | 2018 | 3,5 t |
| 1981 | 6,63 t | 2000 | 3,58 t | 2019 | 3,69 t |
| 1982 | 6,65 t | 2001 | 3,42 t | 2020 | 3,51 t |
| 1983 | 6,68 t | 2002 | 3,36 t | 2021 | 3,69 t |
| 1984 | 6,69 t | 2003 | 3,62 t | 2022 | 3,91 t |
| 1985 | 6,69 t | 2004 | 3,55 t | 2023 | 4,11 t |
| 1986 | 6,72 t | 2005 | 3,72 t | 2024 | 3,81 t |
| 1987 | 6,76 t | 2006 | 3,76 t | | |
| 1988 | 6,65 t | 2007 | 3,37 t | | |