Tabel data
| 1970 | 1.301 Mt | 1989 | 2.237 Mt | 2008 | 1.764 Mt |
| 1971 | 1.302 Mt | 1990 | 2.436 Mt | 2009 | 1.662 Mt |
| 1972 | 1.370 Mt | 1991 | 2.394 Mt | 2010 | 1.747 Mt |
| 1973 | 1.454 Mt | 1992 | 2.205 Mt | 2011 | 1.833 Mt |
| 1974 | 1.529 Mt | 1993 | 2.013 Mt | 2012 | 1.820 Mt |
| 1975 | 1.614 Mt | 1994 | 1.815 Mt | 2013 | 1.764 Mt |
| 1976 | 1.675 Mt | 1995 | 1.769 Mt | 2014 | 1.750 Mt |
| 1977 | 1.712 Mt | 1996 | 1.727 Mt | 2015 | 1.757 Mt |
| 1978 | 1.828 Mt | 1997 | 1.607 Mt | 2016 | 1.735 Mt |
| 1979 | 1.854 Mt | 1998 | 1.613 Mt | 2017 | 1.763 Mt |
| 1980 | 1.915 Mt | 1999 | 1.661 Mt | 2018 | 1.831 Mt |
| 1981 | 1.910 Mt | 2000 | 1.681 Mt | 2019 | 1.858 Mt |
| 1982 | 1.937 Mt | 2001 | 1.684 Mt | 2020 | 1.784 Mt |
| 1983 | 1.971 Mt | 2002 | 1.675 Mt | 2021 | 1.938 Mt |
| 1984 | 2.006 Mt | 2003 | 1.737 Mt | 2022 | 1.895 Mt |
| 1985 | 2.044 Mt | 2004 | 1.739 Mt | 2023 | 1.948 Mt |
| 1986 | 2.111 Mt | 2005 | 1.739 Mt | 2024 | 2.009 Mt |
| 1987 | 2.174 Mt | 2006 | 1.776 Mt | | |
| 1988 | 2.225 Mt | 2007 | 1.779 Mt | | |
Tabel data
| 1970 | 9,98 t | 1989 | 15,14 t | 2008 | 12,36 t |
| 1971 | 9,93 t | 1990 | 16,46 t | 2009 | 11,64 t |
| 1972 | 10,39 t | 1991 | 16,13 t | 2010 | 12,23 t |
| 1973 | 10,96 t | 1992 | 14,85 t | 2011 | 12,81 t |
| 1974 | 11,46 t | 1993 | 13,56 t | 2012 | 12,69 t |
| 1975 | 12,03 t | 1994 | 12,23 t | 2013 | 12,27 t |
| 1976 | 12,39 t | 1995 | 11,92 t | 2014 | 12,13 t |
| 1977 | 12,58 t | 1996 | 11,66 t | 2015 | 12,15 t |
| 1978 | 13,34 t | 1997 | 10,87 t | 2016 | 11,96 t |
| 1979 | 13,43 t | 1998 | 10,92 t | 2017 | 12,14 t |
| 1980 | 13,78 t | 1999 | 11,28 t | 2018 | 12,59 t |
| 1981 | 13,65 t | 2000 | 11,47 t | 2019 | 12,77 t |
| 1982 | 13,76 t | 2001 | 11,54 t | 2020 | 12,28 t |
| 1983 | 13,91 t | 2002 | 11,53 t | 2021 | 13,39 t |
| 1984 | 14,05 t | 2003 | 12,01 t | 2022 | 13,14 t |
| 1985 | 14,21 t | 2004 | 12,07 t | 2023 | 13,55 t |
| 1986 | 14,57 t | 2005 | 12,12 t | 2024 | 14 t |
| 1987 | 14,9 t | 2006 | 12,42 t | | |
| 1988 | 15,15 t | 2007 | 12,46 t | | |