Show data table
| 1970 | 0.0351 Mt | 1989 | 0.1353 Mt | 2008 | 0.5797 Mt |
| 1971 | 0.0371 Mt | 1990 | 0.1807 Mt | 2009 | 0.8011 Mt |
| 1972 | 0.0403 Mt | 1991 | 0.1879 Mt | 2010 | 0.905 Mt |
| 1973 | 0.0424 Mt | 1992 | 0.1859 Mt | 2011 | 1.1062 Mt |
| 1974 | 0.0432 Mt | 1993 | 0.1988 Mt | 2012 | 1.0551 Mt |
| 1975 | 0.0428 Mt | 1994 | 0.2576 Mt | 2013 | 1.1068 Mt |
| 1976 | 0.0446 Mt | 1995 | 0.3208 Mt | 2014 | 1.1293 Mt |
| 1977 | 0.0471 Mt | 1996 | 0.3579 Mt | 2015 | 1.3096 Mt |
| 1978 | 0.0497 Mt | 1997 | 0.3783 Mt | 2016 | 1.4244 Mt |
| 1979 | 0.0513 Mt | 1998 | 0.3959 Mt | 2017 | 1.4736 Mt |
| 1980 | 0.0518 Mt | 1999 | 0.4006 Mt | 2018 | 1.7505 Mt |
| 1981 | 0.0781 Mt | 2000 | 0.4054 Mt | 2019 | 1.8063 Mt |
| 1982 | 0.0777 Mt | 2001 | 0.4392 Mt | 2020 | 1.4131 Mt |
| 1983 | 0.0789 Mt | 2002 | 0.4774 Mt | 2021 | 1.5445 Mt |
| 1984 | 0.0774 Mt | 2003 | 0.496 Mt | 2022 | 1.5172 Mt |
| 1985 | 0.0824 Mt | 2004 | 0.501 Mt | 2023 | 1.5607 Mt |
| 1986 | 0.083 Mt | 2005 | 0.5429 Mt | 2024 | 1.5919 Mt |
| 1987 | 0.1286 Mt | 2006 | 0.5686 Mt | | |
| 1988 | 0.1335 Mt | 2007 | 0.5773 Mt | | |
Show data table
| 1970 | 0.11 t | 1989 | 0.24 t | 2008 | 0.84 t |
| 1971 | 0.12 t | 1990 | 0.31 t | 2009 | 1.15 t |
| 1972 | 0.12 t | 1991 | 0.31 t | 2010 | 1.29 t |
| 1973 | 0.12 t | 1992 | 0.32 t | 2011 | 1.56 t |
| 1974 | 0.12 t | 1993 | 0.36 t | 2012 | 1.47 t |
| 1975 | 0.12 t | 1994 | 0.46 t | 2013 | 1.53 t |
| 1976 | 0.12 t | 1995 | 0.59 t | 2014 | 1.54 t |
| 1977 | 0.12 t | 1996 | 0.65 t | 2015 | 1.77 t |
| 1978 | 0.12 t | 1997 | 0.68 t | 2016 | 1.9 t |
| 1979 | 0.12 t | 1998 | 0.7 t | 2017 | 1.95 t |
| 1980 | 0.12 t | 1999 | 0.69 t | 2018 | 2.3 t |
| 1981 | 0.17 t | 2000 | 0.68 t | 2019 | 2.36 t |
| 1982 | 0.17 t | 2001 | 0.72 t | 2020 | 1.84 t |
| 1983 | 0.17 t | 2002 | 0.76 t | 2021 | 1.99 t |
| 1984 | 0.16 t | 2003 | 0.78 t | 2022 | 1.94 t |
| 1985 | 0.16 t | 2004 | 0.77 t | 2023 | 1.98 t |
| 1986 | 0.16 t | 2005 | 0.82 t | 2024 | 2.01 t |
| 1987 | 0.24 t | 2006 | 0.85 t | | |
| 1988 | 0.24 t | 2007 | 0.85 t | | |