Show data table
| 1970 | 0.7402 Mt | 1989 | 1.592 Mt | 2008 | 2.9642 Mt |
| 1971 | 0.7406 Mt | 1990 | 1.2486 Mt | 2009 | 3.0555 Mt |
| 1972 | 0.7328 Mt | 1991 | 1.1364 Mt | 2010 | 2.6845 Mt |
| 1973 | 0.758 Mt | 1992 | 1.2393 Mt | 2011 | 2.8464 Mt |
| 1974 | 0.8151 Mt | 1993 | 1.4319 Mt | 2012 | 2.9916 Mt |
| 1975 | 0.8392 Mt | 1994 | 1.6524 Mt | 2013 | 3.1042 Mt |
| 1976 | 0.8676 Mt | 1995 | 1.7902 Mt | 2014 | 3.206 Mt |
| 1977 | 0.8978 Mt | 1996 | 1.9616 Mt | 2015 | 3.5661 Mt |
| 1978 | 0.9107 Mt | 1997 | 2.029 Mt | 2016 | 3.8987 Mt |
| 1979 | 1.0502 Mt | 1998 | 2.0938 Mt | 2017 | 3.7537 Mt |
| 1980 | 1.0315 Mt | 1999 | 1.9927 Mt | 2018 | 3.8098 Mt |
| 1981 | 0.9874 Mt | 2000 | 1.9154 Mt | 2019 | 3.8576 Mt |
| 1982 | 0.9162 Mt | 2001 | 2.4506 Mt | 2020 | 3.5444 Mt |
| 1983 | 1 Mt | 2002 | 2.1315 Mt | 2021 | 3.7053 Mt |
| 1984 | 0.9637 Mt | 2003 | 2.2752 Mt | 2022 | 3.5799 Mt |
| 1985 | 1.0575 Mt | 2004 | 2.3976 Mt | 2023 | 3.6138 Mt |
| 1986 | 1.1568 Mt | 2005 | 2.5696 Mt | 2024 | 3.6498 Mt |
| 1987 | 1.7704 Mt | 2006 | 2.5301 Mt | | |
| 1988 | 1.8045 Mt | 2007 | 2.5986 Mt | | |
Show data table
| 1970 | 0.98 t | 1989 | 1.24 t | 2008 | 1.45 t |
| 1971 | 0.95 t | 1990 | 0.91 t | 2009 | 1.47 t |
| 1972 | 0.91 t | 1991 | 0.8 t | 2010 | 1.27 t |
| 1973 | 0.91 t | 1992 | 0.85 t | 2011 | 1.33 t |
| 1974 | 0.95 t | 1993 | 0.95 t | 2012 | 1.36 t |
| 1975 | 0.95 t | 1994 | 1.06 t | 2013 | 1.38 t |
| 1976 | 0.96 t | 1995 | 1.12 t | 2014 | 1.39 t |
| 1977 | 0.96 t | 1996 | 1.19 t | 2015 | 1.5 t |
| 1978 | 0.96 t | 1997 | 1.2 t | 2016 | 1.6 t |
| 1979 | 1.09 t | 1998 | 1.21 t | 2017 | 1.5 t |
| 1980 | 1.05 t | 1999 | 1.12 t | 2018 | 1.48 t |
| 1981 | 0.99 t | 2000 | 1.05 t | 2019 | 1.46 t |
| 1982 | 0.91 t | 2001 | 1.32 t | 2020 | 1.3 t |
| 1983 | 0.96 t | 2002 | 1.13 t | 2021 | 1.32 t |
| 1984 | 0.9 t | 2003 | 1.19 t | 2022 | 1.24 t |
| 1985 | 0.96 t | 2004 | 1.23 t | 2023 | 1.22 t |
| 1986 | 1.02 t | 2005 | 1.31 t | 2024 | 1.2 t |
| 1987 | 1.52 t | 2006 | 1.27 t | | |
| 1988 | 1.49 t | 2007 | 1.29 t | | |