Show data table
| 1970 | 1.568 Mt | 1989 | 1.9715 Mt | 2008 | 6.2794 Mt |
| 1971 | 1.5684 Mt | 1990 | 2.0837 Mt | 2009 | 6.0772 Mt |
| 1972 | 1.8343 Mt | 1991 | 2.2095 Mt | 2010 | 7.3333 Mt |
| 1973 | 1.905 Mt | 1992 | 2.0467 Mt | 2011 | 8.8864 Mt |
| 1974 | 1.7474 Mt | 1993 | 2.1486 Mt | 2012 | 10.6 Mt |
| 1975 | 1.6327 Mt | 1994 | 2.1293 Mt | 2013 | 11.59 Mt |
| 1976 | 1.5786 Mt | 1995 | 2.9406 Mt | 2014 | 11.26 Mt |
| 1977 | 1.6093 Mt | 1996 | 3.5082 Mt | 2015 | 13.2 Mt |
| 1978 | 1.6844 Mt | 1997 | 3.2774 Mt | 2016 | 14.14 Mt |
| 1979 | 1.7763 Mt | 1998 | 2.8508 Mt | 2017 | 14.2 Mt |
| 1980 | 1.7519 Mt | 1999 | 2.6648 Mt | 2018 | 14.92 Mt |
| 1981 | 1.7718 Mt | 2000 | 3.112 Mt | 2019 | 17 Mt |
| 1982 | 1.6144 Mt | 2001 | 3.287 Mt | 2020 | 16.68 Mt |
| 1983 | 1.5809 Mt | 2002 | 3.7394 Mt | 2021 | 18.94 Mt |
| 1984 | 1.6527 Mt | 2003 | 3.9553 Mt | 2022 | 20.91 Mt |
| 1985 | 1.7427 Mt | 2004 | 5.4435 Mt | 2023 | 21.57 Mt |
| 1986 | 1.8426 Mt | 2005 | 6.1729 Mt | 2024 | 21.34 Mt |
| 1987 | 1.8746 Mt | 2006 | 6.6034 Mt | | |
| 1988 | 1.9562 Mt | 2007 | 6.2424 Mt | | |
Show data table
| 1970 | 0.12 t | 1989 | 0.08 t | 2008 | 0.15 t |
| 1971 | 0.11 t | 1990 | 0.08 t | 2009 | 0.14 t |
| 1972 | 0.13 t | 1991 | 0.08 t | 2010 | 0.16 t |
| 1973 | 0.13 t | 1992 | 0.07 t | 2011 | 0.19 t |
| 1974 | 0.11 t | 1993 | 0.08 t | 2012 | 0.22 t |
| 1975 | 0.1 t | 1994 | 0.07 t | 2013 | 0.24 t |
| 1976 | 0.09 t | 1995 | 0.1 t | 2014 | 0.22 t |
| 1977 | 0.09 t | 1996 | 0.11 t | 2015 | 0.25 t |
| 1978 | 0.09 t | 1997 | 0.1 t | 2016 | 0.26 t |
| 1979 | 0.1 t | 1998 | 0.09 t | 2017 | 0.26 t |
| 1980 | 0.09 t | 1999 | 0.08 t | 2018 | 0.26 t |
| 1981 | 0.09 t | 2000 | 0.09 t | 2019 | 0.29 t |
| 1982 | 0.08 t | 2001 | 0.09 t | 2020 | 0.27 t |
| 1983 | 0.07 t | 2002 | 0.1 t | 2021 | 0.3 t |
| 1984 | 0.08 t | 2003 | 0.11 t | 2022 | 0.32 t |
| 1985 | 0.08 t | 2004 | 0.14 t | 2023 | 0.32 t |
| 1986 | 0.08 t | 2005 | 0.16 t | 2024 | 0.31 t |
| 1987 | 0.08 t | 2006 | 0.16 t | | |
| 1988 | 0.08 t | 2007 | 0.15 t | | |