Show data table
| 1970 | 9.2244 Mt | 1989 | 10.03 Mt | 2008 | 10.14 Mt |
| 1971 | 8.6594 Mt | 1990 | 11.19 Mt | 2009 | 9.1214 Mt |
| 1972 | 8.7359 Mt | 1991 | 9.8986 Mt | 2010 | 9.1751 Mt |
| 1973 | 10.1 Mt | 1992 | 8.805 Mt | 2011 | 10.24 Mt |
| 1974 | 10.39 Mt | 1993 | 9.0417 Mt | 2012 | 9.6203 Mt |
| 1975 | 8.3311 Mt | 1994 | 8.7714 Mt | 2013 | 8.7967 Mt |
| 1976 | 8.7494 Mt | 1995 | 8.717 Mt | 2014 | 8.3515 Mt |
| 1977 | 9.0251 Mt | 1996 | 10.27 Mt | 2015 | 7.9328 Mt |
| 1978 | 8.7411 Mt | 1997 | 9.2518 Mt | 2016 | 7.6209 Mt |
| 1979 | 9.899 Mt | 1998 | 10.17 Mt | 2017 | 7.9803 Mt |
| 1980 | 9.0396 Mt | 1999 | 9.3667 Mt | 2018 | 7.5427 Mt |
| 1981 | 9.7729 Mt | 2000 | 9.0375 Mt | 2019 | 8.6778 Mt |
| 1982 | 8.4176 Mt | 2001 | 9.2214 Mt | 2020 | 7.5804 Mt |
| 1983 | 7.8511 Mt | 2002 | 8.6901 Mt | 2021 | 7.634 Mt |
| 1984 | 9.1737 Mt | 2003 | 9.4421 Mt | 2022 | 8.2042 Mt |
| 1985 | 9.7262 Mt | 2004 | 9.2012 Mt | 2023 | 8.0203 Mt |
| 1986 | 10.01 Mt | 2005 | 9.6631 Mt | 2024 | 7.2973 Mt |
| 1987 | 9.6309 Mt | 2006 | 9.6474 Mt | | |
| 1988 | 9.7581 Mt | 2007 | 10.36 Mt | | |
Show data table
| 1970 | 5.54 t | 1989 | 4.88 t | 2008 | 5.14 t |
| 1971 | 5.12 t | 1990 | 5.42 t | 2009 | 4.66 t |
| 1972 | 5.09 t | 1991 | 4.81 t | 2010 | 4.71 t |
| 1973 | 5.79 t | 1992 | 4.33 t | 2011 | 5.29 t |
| 1974 | 5.87 t | 1993 | 4.51 t | 2012 | 4.99 t |
| 1975 | 4.63 t | 1994 | 4.4 t | 2013 | 4.58 t |
| 1976 | 4.79 t | 1995 | 4.36 t | 2014 | 4.36 t |
| 1977 | 4.87 t | 1996 | 5.1 t | 2015 | 4.15 t |
| 1978 | 4.65 t | 1997 | 4.63 t | 2016 | 4 t |
| 1979 | 5.19 t | 1998 | 5.06 t | 2017 | 4.2 t |
| 1980 | 4.68 t | 1999 | 4.64 t | 2018 | 3.99 t |
| 1981 | 4.99 t | 2000 | 4.46 t | 2019 | 4.63 t |
| 1982 | 4.25 t | 2001 | 4.53 t | 2020 | 4.08 t |
| 1983 | 3.94 t | 2002 | 4.3 t | 2021 | 4.16 t |
| 1984 | 4.58 t | 2003 | 4.67 t | 2022 | 4.48 t |
| 1985 | 4.83 t | 2004 | 4.56 t | 2023 | 4.39 t |
| 1986 | 4.94 t | 2005 | 4.82 t | 2024 | 4 t |
| 1987 | 4.73 t | 2006 | 4.84 t | | |
| 1988 | 4.77 t | 2007 | 5.23 t | | |