Show data table
| 1970 | 4.2609 Mt | 1989 | 14.18 Mt | 2008 | 25.43 Mt |
| 1971 | 4.2753 Mt | 1990 | 14.77 Mt | 2009 | 25.37 Mt |
| 1972 | 4.8126 Mt | 1991 | 15.25 Mt | 2010 | 27.73 Mt |
| 1973 | 4.8371 Mt | 1992 | 16.21 Mt | 2011 | 26.26 Mt |
| 1974 | 5.3315 Mt | 1993 | 16.81 Mt | 2012 | 28.24 Mt |
| 1975 | 5.429 Mt | 1994 | 16.92 Mt | 2013 | 28.22 Mt |
| 1976 | 5.7921 Mt | 1995 | 17.29 Mt | 2014 | 30.2 Mt |
| 1977 | 6.5195 Mt | 1996 | 17.83 Mt | 2015 | 30.72 Mt |
| 1978 | 7.2359 Mt | 1997 | 18.37 Mt | 2016 | 29.86 Mt |
| 1979 | 8.5442 Mt | 1998 | 19.18 Mt | 2017 | 30.3 Mt |
| 1980 | 9.418 Mt | 1999 | 20.16 Mt | 2018 | 30.19 Mt |
| 1981 | 9.7384 Mt | 2000 | 21.13 Mt | 2019 | 30.25 Mt |
| 1982 | 9.4684 Mt | 2001 | 22.01 Mt | 2020 | 28.72 Mt |
| 1983 | 11 Mt | 2002 | 21.78 Mt | 2021 | 31.02 Mt |
| 1984 | 11.46 Mt | 2003 | 21.57 Mt | 2022 | 30.36 Mt |
| 1985 | 11.86 Mt | 2004 | 22.82 Mt | 2023 | 31.21 Mt |
| 1986 | 12.21 Mt | 2005 | 23.45 Mt | 2024 | 32.18 Mt |
| 1987 | 12.35 Mt | 2006 | 24.24 Mt | | |
| 1988 | 13.14 Mt | 2007 | 24.98 Mt | | |
Show data table
| 1970 | 0.83 t | 1989 | 1.74 t | 2008 | 2.41 t |
| 1971 | 0.81 t | 1990 | 1.77 t | 2009 | 2.38 t |
| 1972 | 0.89 t | 1991 | 1.79 t | 2010 | 2.58 t |
| 1973 | 0.87 t | 1992 | 1.87 t | 2011 | 2.41 t |
| 1974 | 0.94 t | 1993 | 1.9 t | 2012 | 2.57 t |
| 1975 | 0.93 t | 1994 | 1.88 t | 2013 | 2.53 t |
| 1976 | 0.97 t | 1995 | 1.89 t | 2014 | 2.68 t |
| 1977 | 1.06 t | 1996 | 1.92 t | 2015 | 2.69 t |
| 1978 | 1.15 t | 1997 | 1.95 t | 2016 | 2.59 t |
| 1979 | 1.32 t | 1998 | 2.01 t | 2017 | 2.6 t |
| 1980 | 1.43 t | 1999 | 2.09 t | 2018 | 2.57 t |
| 1981 | 1.44 t | 2000 | 2.16 t | 2019 | 2.55 t |
| 1982 | 1.37 t | 2001 | 2.23 t | 2020 | 2.4 t |
| 1983 | 1.56 t | 2002 | 2.18 t | 2021 | 2.57 t |
| 1984 | 1.59 t | 2003 | 2.14 t | 2022 | 2.5 t |
| 1985 | 1.6 t | 2004 | 2.24 t | 2023 | 2.56 t |
| 1986 | 1.61 t | 2005 | 2.29 t | 2024 | 2.62 t |
| 1987 | 1.58 t | 2006 | 2.34 t | | |
| 1988 | 1.65 t | 2007 | 2.39 t | | |