Show data table
| 1970 | 0.634 Mt | 1989 | 2.0519 Mt | 2008 | 4.5677 Mt |
| 1971 | 0.6449 Mt | 1990 | 2.184 Mt | 2009 | 4.7128 Mt |
| 1972 | 0.7021 Mt | 1991 | 2.1343 Mt | 2010 | 5.2439 Mt |
| 1973 | 0.7758 Mt | 1992 | 2.5581 Mt | 2011 | 5.451 Mt |
| 1974 | 0.7506 Mt | 1993 | 2.9158 Mt | 2012 | 5.4123 Mt |
| 1975 | 0.8052 Mt | 1994 | 3.4014 Mt | 2013 | 5.641 Mt |
| 1976 | 0.8944 Mt | 1995 | 3.8597 Mt | 2014 | 5.9499 Mt |
| 1977 | 1.2726 Mt | 1996 | 3.8134 Mt | 2015 | 6.661 Mt |
| 1978 | 1.5289 Mt | 1997 | 4.2206 Mt | 2016 | 7.5122 Mt |
| 1979 | 1.4645 Mt | 1998 | 4.4217 Mt | 2017 | 8.4688 Mt |
| 1980 | 1.498 Mt | 1999 | 4.4184 Mt | 2018 | 8.7429 Mt |
| 1981 | 1.4469 Mt | 2000 | 3.6426 Mt | 2019 | 8.5218 Mt |
| 1982 | 1.4334 Mt | 2001 | 3.7869 Mt | 2020 | 7.8549 Mt |
| 1983 | 1.3961 Mt | 2002 | 3.9651 Mt | 2021 | 7.9771 Mt |
| 1984 | 1.5337 Mt | 2003 | 4.0925 Mt | 2022 | 8.0051 Mt |
| 1985 | 1.531 Mt | 2004 | 4.1409 Mt | 2023 | 7.7424 Mt |
| 1986 | 1.6347 Mt | 2005 | 3.8195 Mt | 2024 | 8.0253 Mt |
| 1987 | 1.8162 Mt | 2006 | 4.116 Mt | | |
| 1988 | 2.0508 Mt | 2007 | 3.9111 Mt | | |
Show data table
| 1970 | 0.27 t | 1989 | 0.52 t | 2008 | 0.81 t |
| 1971 | 0.26 t | 1990 | 0.54 t | 2009 | 0.83 t |
| 1972 | 0.28 t | 1991 | 0.51 t | 2010 | 0.91 t |
| 1973 | 0.3 t | 1992 | 0.6 t | 2011 | 0.94 t |
| 1974 | 0.29 t | 1993 | 0.67 t | 2012 | 0.92 t |
| 1975 | 0.3 t | 1994 | 0.76 t | 2013 | 0.94 t |
| 1976 | 0.32 t | 1995 | 0.84 t | 2014 | 0.98 t |
| 1977 | 0.45 t | 1996 | 0.81 t | 2015 | 1.08 t |
| 1978 | 0.53 t | 1997 | 0.88 t | 2016 | 1.2 t |
| 1979 | 0.49 t | 1998 | 0.9 t | 2017 | 1.34 t |
| 1980 | 0.49 t | 1999 | 0.88 t | 2018 | 1.36 t |
| 1981 | 0.46 t | 2000 | 0.71 t | 2019 | 1.31 t |
| 1982 | 0.44 t | 2001 | 0.73 t | 2020 | 1.19 t |
| 1983 | 0.42 t | 2002 | 0.75 t | 2021 | 1.19 t |
| 1984 | 0.45 t | 2003 | 0.77 t | 2022 | 1.18 t |
| 1985 | 0.44 t | 2004 | 0.77 t | 2023 | 1.13 t |
| 1986 | 0.45 t | 2005 | 0.7 t | 2024 | 1.16 t |
| 1987 | 0.49 t | 2006 | 0.75 t | | |
| 1988 | 0.54 t | 2007 | 0.7 t | | |