Mostrar tabla de datos
| 1970 | 15,88 Mt | 1989 | 31,97 Mt | 2008 | 23,32 Mt |
| 1971 | 16,11 Mt | 1990 | 24,02 Mt | 2009 | 21,67 Mt |
| 1972 | 15,79 Mt | 1991 | 17,74 Mt | 2010 | 20,94 Mt |
| 1973 | 17,32 Mt | 1992 | 16,39 Mt | 2011 | 20,45 Mt |
| 1974 | 18,66 Mt | 1993 | 16,65 Mt | 2012 | 18,79 Mt |
| 1975 | 19,71 Mt | 1994 | 15,97 Mt | 2013 | 18,38 Mt |
| 1976 | 19,42 Mt | 1995 | 16,5 Mt | 2014 | 17,68 Mt |
| 1977 | 19,84 Mt | 1996 | 17,2 Mt | 2015 | 18,02 Mt |
| 1978 | 21,38 Mt | 1997 | 18,31 Mt | 2016 | 18,27 Mt |
| 1979 | 22,44 Mt | 1998 | 19,03 Mt | 2017 | 18,8 Mt |
| 1980 | 20,82 Mt | 1999 | 19,94 Mt | 2018 | 17,77 Mt |
| 1981 | 22,64 Mt | 2000 | 19,38 Mt | 2019 | 17,97 Mt |
| 1982 | 23,81 Mt | 2001 | 20,54 Mt | 2020 | 17,19 Mt |
| 1983 | 27,6 Mt | 2002 | 21,36 Mt | 2021 | 17,51 Mt |
| 1984 | 27,88 Mt | 2003 | 22,75 Mt | 2022 | 17,63 Mt |
| 1985 | 28,66 Mt | 2004 | 22,73 Mt | 2023 | 18,66 Mt |
| 1986 | 31,18 Mt | 2005 | 22,85 Mt | 2024 | 18,68 Mt |
| 1987 | 30,41 Mt | 2006 | 23,04 Mt | | |
| 1988 | 33,42 Mt | 2007 | 24,51 Mt | | |
Mostrar tabla de datos
| 1970 | 3,6 t | 1989 | 6,71 t | 2008 | 5,41 t |
| 1971 | 3,64 t | 1990 | 5,03 t | 2009 | 5,03 t |
| 1972 | 3,55 t | 1991 | 3,78 t | 2010 | 4,88 t |
| 1973 | 3,88 t | 1992 | 3,58 t | 2011 | 4,78 t |
| 1974 | 4,16 t | 1993 | 3,62 t | 2012 | 4,41 t |
| 1975 | 4,37 t | 1994 | 3,43 t | 2013 | 4,34 t |
| 1976 | 4,28 t | 1995 | 3,57 t | 2014 | 4,21 t |
| 1977 | 4,35 t | 1996 | 3,78 t | 2015 | 4,34 t |
| 1978 | 4,67 t | 1997 | 4,04 t | 2016 | 4,45 t |
| 1979 | 4,88 t | 1998 | 4,2 t | 2017 | 4,65 t |
| 1980 | 4,53 t | 1999 | 4,42 t | 2018 | 4,45 t |
| 1981 | 4,91 t | 2000 | 4,34 t | 2019 | 4,55 t |
| 1982 | 5,14 t | 2001 | 4,78 t | 2020 | 4,39 t |
| 1983 | 5,93 t | 2002 | 4,96 t | 2021 | 4,51 t |
| 1984 | 5,96 t | 2003 | 5,29 t | 2022 | 4,57 t |
| 1985 | 6,1 t | 2004 | 5,28 t | 2023 | 4,84 t |
| 1986 | 6,6 t | 2005 | 5,3 t | 2024 | 4,83 t |
| 1987 | 6,42 t | 2006 | 5,34 t | | |
| 1988 | 7,03 t | 2007 | 5,69 t | | |