Mostrar tabla de datos
| 1970 | 96,17 Mt | 1989 | 57,62 Mt | 2008 | 51,71 Mt |
| 1971 | 88,98 Mt | 1990 | 57,14 Mt | 2009 | 46,92 Mt |
| 1972 | 89,18 Mt | 1991 | 57,64 Mt | 2010 | 52,88 Mt |
| 1973 | 90,27 Mt | 1992 | 60,19 Mt | 2011 | 48,46 Mt |
| 1974 | 83,5 Mt | 1993 | 60,27 Mt | 2012 | 45,73 Mt |
| 1975 | 85,29 Mt | 1994 | 62,94 Mt | 2013 | 43,97 Mt |
| 1976 | 92,39 Mt | 1995 | 62,64 Mt | 2014 | 42,78 Mt |
| 1977 | 88,47 Mt | 1996 | 67,76 Mt | 2015 | 42,9 Mt |
| 1978 | 82,97 Mt | 1997 | 61,8 Mt | 2016 | 42,49 Mt |
| 1979 | 86,11 Mt | 1998 | 63 Mt | 2017 | 41,84 Mt |
| 1980 | 78,63 Mt | 1999 | 61,69 Mt | 2018 | 39,65 Mt |
| 1981 | 71,04 Mt | 2000 | 57,98 Mt | 2019 | 39,5 Mt |
| 1982 | 64,91 Mt | 2001 | 58,06 Mt | 2020 | 38,04 Mt |
| 1983 | 59,08 Mt | 2002 | 59,39 Mt | 2021 | 40,48 Mt |
| 1984 | 58,57 Mt | 2003 | 59,66 Mt | 2022 | 37,75 Mt |
| 1985 | 62,56 Mt | 2004 | 58,07 Mt | 2023 | 36,67 Mt |
| 1986 | 64,21 Mt | 2005 | 54,53 Mt | 2024 | 37,77 Mt |
| 1987 | 62,25 Mt | 2006 | 55,1 Mt | | |
| 1988 | 60,49 Mt | 2007 | 52,84 Mt | | |
Mostrar tabla de datos
| 1970 | 11,96 t | 1989 | 6,78 t | 2008 | 5,61 t |
| 1971 | 10,99 t | 1990 | 6,68 t | 2009 | 5,05 t |
| 1972 | 10,98 t | 1991 | 6,69 t | 2010 | 5,64 t |
| 1973 | 11,09 t | 1992 | 6,94 t | 2011 | 5,13 t |
| 1974 | 10,23 t | 1993 | 6,91 t | 2012 | 4,8 t |
| 1975 | 10,41 t | 1994 | 7,17 t | 2013 | 4,58 t |
| 1976 | 11,24 t | 1995 | 7,1 t | 2014 | 4,41 t |
| 1977 | 10,72 t | 1996 | 7,66 t | 2015 | 4,38 t |
| 1978 | 10,03 t | 1997 | 6,99 t | 2016 | 4,28 t |
| 1979 | 10,38 t | 1998 | 7,12 t | 2017 | 4,16 t |
| 1980 | 9,46 t | 1999 | 6,96 t | 2018 | 3,9 t |
| 1981 | 8,54 t | 2000 | 6,54 t | 2019 | 3,84 t |
| 1982 | 7,8 t | 2001 | 6,53 t | 2020 | 3,67 t |
| 1983 | 7,09 t | 2002 | 6,65 t | 2021 | 3,89 t |
| 1984 | 7,03 t | 2003 | 6,66 t | 2022 | 3,6 t |
| 1985 | 7,49 t | 2004 | 6,46 t | 2023 | 3,48 t |
| 1986 | 7,67 t | 2005 | 6,04 t | 2024 | 3,57 t |
| 1987 | 7,41 t | 2006 | 6,07 t | | |
| 1988 | 7,17 t | 2007 | 5,78 t | | |