表を表示
| 1970 | 0.3457 Mt | 1989 | 0.4875 Mt | 2008 | 4.2838 Mt |
| 1971 | 0.3423 Mt | 1990 | 1.5368 Mt | 2009 | 4.1579 Mt |
| 1972 | 0.3657 Mt | 1991 | 1.7679 Mt | 2010 | 4.4851 Mt |
| 1973 | 0.392 Mt | 1992 | 1.9313 Mt | 2011 | 5.7394 Mt |
| 1974 | 0.411 Mt | 1993 | 1.9582 Mt | 2012 | 5.683 Mt |
| 1975 | 0.4687 Mt | 1994 | 2.0402 Mt | 2013 | 5.0231 Mt |
| 1976 | 0.448 Mt | 1995 | 2.0879 Mt | 2014 | 4.9718 Mt |
| 1977 | 0.4476 Mt | 1996 | 2.2305 Mt | 2015 | 4.909 Mt |
| 1978 | 0.4549 Mt | 1997 | 2.5128 Mt | 2016 | 4.9059 Mt |
| 1979 | 0.4576 Mt | 1998 | 2.6671 Mt | 2017 | 5.408 Mt |
| 1980 | 0.5134 Mt | 1999 | 2.7436 Mt | 2018 | 5.4582 Mt |
| 1981 | 0.5022 Mt | 2000 | 3.0984 Mt | 2019 | 5.6074 Mt |
| 1982 | 0.4296 Mt | 2001 | 3.1666 Mt | 2020 | 5.2063 Mt |
| 1983 | 0.3892 Mt | 2002 | 3.1305 Mt | 2021 | 6.1189 Mt |
| 1984 | 0.3595 Mt | 2003 | 3.1575 Mt | 2022 | 5.6023 Mt |
| 1985 | 0.3771 Mt | 2004 | 3.1468 Mt | 2023 | 4.7047 Mt |
| 1986 | 0.3644 Mt | 2005 | 3.5683 Mt | 2024 | 4.7949 Mt |
| 1987 | 0.4844 Mt | 2006 | 3.7866 Mt | | |
| 1988 | 0.4285 Mt | 2007 | 4.0794 Mt | | |
表を表示
| 1970 | 0.07 t | 1989 | 0.05 t | 2008 | 0.31 t |
| 1971 | 0.07 t | 1990 | 0.16 t | 2009 | 0.29 t |
| 1972 | 0.08 t | 1991 | 0.18 t | 2010 | 0.3 t |
| 1973 | 0.08 t | 1992 | 0.19 t | 2011 | 0.38 t |
| 1974 | 0.08 t | 1993 | 0.19 t | 2012 | 0.36 t |
| 1975 | 0.09 t | 1994 | 0.2 t | 2013 | 0.31 t |
| 1976 | 0.08 t | 1995 | 0.21 t | 2014 | 0.3 t |
| 1977 | 0.08 t | 1996 | 0.22 t | 2015 | 0.29 t |
| 1978 | 0.08 t | 1997 | 0.24 t | 2016 | 0.28 t |
| 1979 | 0.08 t | 1998 | 0.25 t | 2017 | 0.3 t |
| 1980 | 0.08 t | 1999 | 0.25 t | 2018 | 0.29 t |
| 1981 | 0.08 t | 2000 | 0.27 t | 2019 | 0.29 t |
| 1982 | 0.06 t | 2001 | 0.27 t | 2020 | 0.27 t |
| 1983 | 0.06 t | 2002 | 0.26 t | 2021 | 0.31 t |
| 1984 | 0.05 t | 2003 | 0.26 t | 2022 | 0.27 t |
| 1985 | 0.05 t | 2004 | 0.25 t | 2023 | 0.22 t |
| 1986 | 0.05 t | 2005 | 0.28 t | 2024 | 0.22 t |
| 1987 | 0.06 t | 2006 | 0.29 t | | |
| 1988 | 0.05 t | 2007 | 0.3 t | | |