表を表示
| 1970 | 0.0751 Mt | 1989 | 0.0984 Mt | 2008 | 0.1287 Mt |
| 1971 | 0.0751 Mt | 1990 | 0.1019 Mt | 2009 | 0.1443 Mt |
| 1972 | 0.0801 Mt | 1991 | 0.095 Mt | 2010 | 0.1549 Mt |
| 1973 | 0.0964 Mt | 1992 | 0.0532 Mt | 2011 | 0.1797 Mt |
| 1974 | 0.1183 Mt | 1993 | 0.0538 Mt | 2012 | 0.1477 Mt |
| 1975 | 0.0977 Mt | 1994 | 0.0553 Mt | 2013 | 0.151 Mt |
| 1976 | 0.0963 Mt | 1995 | 0.0502 Mt | 2014 | 0.1753 Mt |
| 1977 | 0.1017 Mt | 1996 | 0.0506 Mt | 2015 | 0.1592 Mt |
| 1978 | 0.1009 Mt | 1997 | 0.0521 Mt | 2016 | 0.1659 Mt |
| 1979 | 0.1084 Mt | 1998 | 0.0537 Mt | 2017 | 0.1664 Mt |
| 1980 | 0.1168 Mt | 1999 | 0.0536 Mt | 2018 | 0.2288 Mt |
| 1981 | 0.1012 Mt | 2000 | 0.084 Mt | 2019 | 0.219 Mt |
| 1982 | 0.0997 Mt | 2001 | 0.0977 Mt | 2020 | 0.2515 Mt |
| 1983 | 0.0985 Mt | 2002 | 0.0961 Mt | 2021 | 0.2909 Mt |
| 1984 | 0.0879 Mt | 2003 | 0.1122 Mt | 2022 | 0.2709 Mt |
| 1985 | 0.1108 Mt | 2004 | 0.0874 Mt | 2023 | 0.2717 Mt |
| 1986 | 0.0891 Mt | 2005 | 0.0892 Mt | 2024 | 0.2851 Mt |
| 1987 | 0.0879 Mt | 2006 | 0.0803 Mt | | |
| 1988 | 0.1158 Mt | 2007 | 0.131 Mt | | |
表を表示
| 1970 | 0.87 t | 1989 | 0.68 t | 2008 | 0.57 t |
| 1971 | 0.85 t | 1990 | 0.69 t | 2009 | 0.62 t |
| 1972 | 0.87 t | 1991 | 0.63 t | 2010 | 0.65 t |
| 1973 | 1.02 t | 1992 | 0.34 t | 2011 | 0.74 t |
| 1974 | 1.22 t | 1993 | 0.34 t | 2012 | 0.59 t |
| 1975 | 0.97 t | 1994 | 0.34 t | 2013 | 0.59 t |
| 1976 | 0.93 t | 1995 | 0.3 t | 2014 | 0.67 t |
| 1977 | 0.95 t | 1996 | 0.3 t | 2015 | 0.6 t |
| 1978 | 0.92 t | 1997 | 0.3 t | 2016 | 0.61 t |
| 1979 | 0.96 t | 1998 | 0.3 t | 2017 | 0.6 t |
| 1980 | 1.01 t | 1999 | 0.29 t | 2018 | 0.8 t |
| 1981 | 0.86 t | 2000 | 0.45 t | 2019 | 0.75 t |
| 1982 | 0.82 t | 2001 | 0.51 t | 2020 | 0.84 t |
| 1983 | 0.79 t | 2002 | 0.49 t | 2021 | 0.95 t |
| 1984 | 0.69 t | 2003 | 0.56 t | 2022 | 0.87 t |
| 1985 | 0.85 t | 2004 | 0.42 t | 2023 | 0.85 t |
| 1986 | 0.67 t | 2005 | 0.42 t | 2024 | 0.87 t |
| 1987 | 0.64 t | 2006 | 0.37 t | | |
| 1988 | 0.82 t | 2007 | 0.59 t | | |