Mostrar tabla de datos
| 1970 | 23,93 Mt | 1989 | 30,65 Mt | 2008 | 5,681 Mt |
| 1971 | 23,66 Mt | 1990 | 34,49 Mt | 2009 | 6,4713 Mt |
| 1972 | 25,13 Mt | 1991 | 26,61 Mt | 2010 | 6,3124 Mt |
| 1973 | 26,64 Mt | 1992 | 20,92 Mt | 2011 | 7,5848 Mt |
| 1974 | 27,93 Mt | 1993 | 16,75 Mt | 2012 | 8,2738 Mt |
| 1975 | 29,93 Mt | 1994 | 10,92 Mt | 2013 | 9,1493 Mt |
| 1976 | 30,43 Mt | 1995 | 8,5229 Mt | 2014 | 9,8404 Mt |
| 1977 | 30,74 Mt | 1996 | 6,9003 Mt | 2015 | 10,65 Mt |
| 1978 | 31,53 Mt | 1997 | 6,0515 Mt | 2016 | 11,03 Mt |
| 1979 | 32,62 Mt | 1998 | 5,4875 Mt | 2017 | 11,17 Mt |
| 1980 | 33,5 Mt | 1999 | 4,8888 Mt | 2018 | 11,14 Mt |
| 1981 | 33,9 Mt | 2000 | 5,2126 Mt | 2019 | 11,92 Mt |
| 1982 | 33,5 Mt | 2001 | 3,8788 Mt | 2020 | 11,54 Mt |
| 1983 | 32,92 Mt | 2002 | 3,5935 Mt | 2021 | 12,34 Mt |
| 1984 | 32,64 Mt | 2003 | 3,9559 Mt | 2022 | 13,46 Mt |
| 1985 | 32,2 Mt | 2004 | 4,3124 Mt | 2023 | 13,56 Mt |
| 1986 | 31,91 Mt | 2005 | 4,9793 Mt | 2024 | 13,47 Mt |
| 1987 | 32,32 Mt | 2006 | 5,6816 Mt | | |
| 1988 | 31,84 Mt | 2007 | 6,5959 Mt | | |
Mostrar tabla de datos
| 1970 | 5,81 t | 1989 | 6,38 t | 2008 | 1,48 t |
| 1971 | 5,68 t | 1990 | 7,18 t | 2009 | 1,7 t |
| 1972 | 5,98 t | 1991 | 5,5 t | 2010 | 1,67 t |
| 1973 | 6,28 t | 1992 | 4,29 t | 2011 | 2,02 t |
| 1974 | 6,53 t | 1993 | 3,41 t | 2012 | 2,22 t |
| 1975 | 6,94 t | 1994 | 2,26 t | 2013 | 2,46 t |
| 1976 | 7,01 t | 1995 | 1,83 t | 2014 | 2,65 t |
| 1977 | 7,03 t | 1996 | 1,54 t | 2015 | 2,86 t |
| 1978 | 7,17 t | 1997 | 1,39 t | 2016 | 2,96 t |
| 1979 | 7,36 t | 1998 | 1,29 t | 2017 | 3 t |
| 1980 | 7,5 t | 1999 | 1,18 t | 2018 | 2,99 t |
| 1981 | 7,53 t | 2000 | 1,28 t | 2019 | 3,2 t |
| 1982 | 7,37 t | 2001 | 0,97 t | 2020 | 3,1 t |
| 1983 | 7,18 t | 2002 | 0,9 t | 2021 | 3,33 t |
| 1984 | 7,06 t | 2003 | 1 t | 2022 | 3,63 t |
| 1985 | 6,91 t | 2004 | 1,1 t | 2023 | 3,65 t |
| 1986 | 6,78 t | 2005 | 1,28 t | 2024 | 3,64 t |
| 1987 | 6,81 t | 2006 | 1,46 t | | |
| 1988 | 6,65 t | 2007 | 1,71 t | | |