Mostrar tabla de datos
| 1970 | 188,29 Mt | 1989 | 183,09 Mt | 2008 | 126,12 Mt |
| 1971 | 188,55 Mt | 1990 | 165,5 Mt | 2009 | 119,71 Mt |
| 1972 | 188,49 Mt | 1991 | 150,16 Mt | 2010 | 120,99 Mt |
| 1973 | 186,53 Mt | 1992 | 144,38 Mt | 2011 | 118,12 Mt |
| 1974 | 169,77 Mt | 1993 | 139,85 Mt | 2012 | 114,03 Mt |
| 1975 | 177,05 Mt | 1994 | 134,36 Mt | 2013 | 109,53 Mt |
| 1976 | 182,46 Mt | 1995 | 133,59 Mt | 2014 | 107,24 Mt |
| 1977 | 192,95 Mt | 1996 | 137,4 Mt | 2015 | 108,29 Mt |
| 1978 | 190,78 Mt | 1997 | 134,01 Mt | 2016 | 109,81 Mt |
| 1979 | 200,52 Mt | 1998 | 127,97 Mt | 2017 | 110,38 Mt |
| 1980 | 193,52 Mt | 1999 | 119,72 Mt | 2018 | 109,34 Mt |
| 1981 | 194,17 Mt | 2000 | 132,32 Mt | 2019 | 103,78 Mt |
| 1982 | 196,16 Mt | 2001 | 132,23 Mt | 2020 | 94,86 Mt |
| 1983 | 196,81 Mt | 2002 | 127,4 Mt | 2021 | 99,52 Mt |
| 1984 | 199,36 Mt | 2003 | 130,67 Mt | 2022 | 97,69 Mt |
| 1985 | 196,76 Mt | 2004 | 131,53 Mt | 2023 | 85,61 Mt |
| 1986 | 194,8 Mt | 2005 | 129,05 Mt | 2024 | 77,75 Mt |
| 1987 | 194,65 Mt | 2006 | 130,79 Mt | | |
| 1988 | 190,63 Mt | 2007 | 132,34 Mt | | |
Mostrar tabla de datos
| 1970 | 19,1 t | 1989 | 17,67 t | 2008 | 12,14 t |
| 1971 | 19,19 t | 1990 | 16,02 t | 2009 | 11,46 t |
| 1972 | 19,1 t | 1991 | 14,57 t | 2010 | 11,55 t |
| 1973 | 18,8 t | 1992 | 13,99 t | 2011 | 11,25 t |
| 1974 | 17 t | 1993 | 13,54 t | 2012 | 10,85 t |
| 1975 | 17,6 t | 1994 | 13 t | 2013 | 10,42 t |
| 1976 | 18,02 t | 1995 | 12,94 t | 2014 | 10,19 t |
| 1977 | 18,94 t | 1996 | 13,32 t | 2015 | 10,27 t |
| 1978 | 18,63 t | 1997 | 13,01 t | 2016 | 10,39 t |
| 1979 | 19,48 t | 1998 | 12,43 t | 2017 | 10,42 t |
| 1980 | 18,78 t | 1999 | 11,64 t | 2018 | 10,29 t |
| 1981 | 18,85 t | 2000 | 12,9 t | 2019 | 9,72 t |
| 1982 | 19,02 t | 2001 | 12,94 t | 2020 | 8,87 t |
| 1983 | 19,06 t | 2002 | 12,49 t | 2021 | 9,47 t |
| 1984 | 19,3 t | 2003 | 12,82 t | 2022 | 9,15 t |
| 1985 | 19,03 t | 2004 | 12,9 t | 2023 | 7,88 t |
| 1986 | 18,84 t | 2005 | 12,64 t | 2024 | 7,13 t |
| 1987 | 18,81 t | 2006 | 12,77 t | | |
| 1988 | 18,41 t | 2007 | 12,85 t | | |