表を表示
| 1970 | 0.0188 Mt | 1989 | 0.0161 Mt | 2008 | 0.0686 Mt |
| 1971 | 0.0188 Mt | 1990 | 0.0167 Mt | 2009 | 0.0581 Mt |
| 1972 | 0.0201 Mt | 1991 | 0.0175 Mt | 2010 | 0.0611 Mt |
| 1973 | 0.0241 Mt | 1992 | 0.019 Mt | 2011 | 0.057 Mt |
| 1974 | 0.0296 Mt | 1993 | 0.0192 Mt | 2012 | 0.0558 Mt |
| 1975 | 0.0245 Mt | 1994 | 0.0198 Mt | 2013 | 0.0601 Mt |
| 1976 | 0.0241 Mt | 1995 | 0.0179 Mt | 2014 | 0.0607 Mt |
| 1977 | 0.0254 Mt | 1996 | 0.0181 Mt | 2015 | 0.0623 Mt |
| 1978 | 0.0252 Mt | 1997 | 0.0186 Mt | 2016 | 0.0678 Mt |
| 1979 | 0.0271 Mt | 1998 | 0.0192 Mt | 2017 | 0.0691 Mt |
| 1980 | 0.0292 Mt | 1999 | 0.0192 Mt | 2018 | 0.0759 Mt |
| 1981 | 0.0289 Mt | 2000 | 0.0324 Mt | 2019 | 0.0761 Mt |
| 1982 | 0.0285 Mt | 2001 | 0.0292 Mt | 2020 | 0.0737 Mt |
| 1983 | 0.0281 Mt | 2002 | 0.0432 Mt | 2021 | 0.0805 Mt |
| 1984 | 0.0126 Mt | 2003 | 0.0447 Mt | 2022 | 0.0758 Mt |
| 1985 | 0.0139 Mt | 2004 | 0.0464 Mt | 2023 | 0.076 Mt |
| 1986 | 0.0124 Mt | 2005 | 0.0616 Mt | 2024 | 0.0797 Mt |
| 1987 | 0.0166 Mt | 2006 | 0.0662 Mt | | |
| 1988 | 0.0167 Mt | 2007 | 0.0616 Mt | | |
表を表示
| 1970 | 0.33 t | 1989 | 0.22 t | 2008 | 0.66 t |
| 1971 | 0.32 t | 1990 | 0.22 t | 2009 | 0.55 t |
| 1972 | 0.34 t | 1991 | 0.23 t | 2010 | 0.56 t |
| 1973 | 0.4 t | 1992 | 0.24 t | 2011 | 0.52 t |
| 1974 | 0.48 t | 1993 | 0.24 t | 2012 | 0.5 t |
| 1975 | 0.4 t | 1994 | 0.25 t | 2013 | 0.53 t |
| 1976 | 0.4 t | 1995 | 0.22 t | 2014 | 0.53 t |
| 1977 | 0.42 t | 1996 | 0.22 t | 2015 | 0.53 t |
| 1978 | 0.42 t | 1997 | 0.22 t | 2016 | 0.57 t |
| 1979 | 0.45 t | 1998 | 0.22 t | 2017 | 0.57 t |
| 1980 | 0.48 t | 1999 | 0.22 t | 2018 | 0.62 t |
| 1981 | 0.47 t | 2000 | 0.37 t | 2019 | 0.61 t |
| 1982 | 0.45 t | 2001 | 0.32 t | 2020 | 0.58 t |
| 1983 | 0.44 t | 2002 | 0.47 t | 2021 | 0.63 t |
| 1984 | 0.19 t | 2003 | 0.47 t | 2022 | 0.58 t |
| 1985 | 0.21 t | 2004 | 0.48 t | 2023 | 0.57 t |
| 1986 | 0.18 t | 2005 | 0.63 t | 2024 | 0.59 t |
| 1987 | 0.24 t | 2006 | 0.66 t | | |
| 1988 | 0.23 t | 2007 | 0.6 t | | |