表を表示
| 1970 | 0.0073 Mt | 1989 | 0.0187 Mt | 2008 | 0.0549 Mt |
| 1971 | 0.0073 Mt | 1990 | 0.0183 Mt | 2009 | 0.0634 Mt |
| 1972 | 0.0089 Mt | 1991 | 0.0184 Mt | 2010 | 0.0705 Mt |
| 1973 | 0.009 Mt | 1992 | 0.0185 Mt | 2011 | 0.0552 Mt |
| 1974 | 0.008 Mt | 1993 | 0.018 Mt | 2012 | 0.0571 Mt |
| 1975 | 0.0097 Mt | 1994 | 0.0184 Mt | 2013 | 0.0654 Mt |
| 1976 | 0.0088 Mt | 1995 | 0.0181 Mt | 2014 | 0.07 Mt |
| 1977 | 0.0097 Mt | 1996 | 0.0235 Mt | 2015 | 0.0717 Mt |
| 1978 | 0.0097 Mt | 1997 | 0.0241 Mt | 2016 | 0.0772 Mt |
| 1979 | 0.0096 Mt | 1998 | 0.0247 Mt | 2017 | 0.0671 Mt |
| 1980 | 0.0095 Mt | 1999 | 0.0251 Mt | 2018 | 0.0665 Mt |
| 1981 | 0.014 Mt | 2000 | 0.0278 Mt | 2019 | 0.0874 Mt |
| 1982 | 0.0131 Mt | 2001 | 0.0277 Mt | 2020 | 0.0846 Mt |
| 1983 | 0.0128 Mt | 2002 | 0.0309 Mt | 2021 | 0.0845 Mt |
| 1984 | 0.0095 Mt | 2003 | 0.0344 Mt | 2022 | 0.0884 Mt |
| 1985 | 0.0096 Mt | 2004 | 0.0355 Mt | 2023 | 0.0887 Mt |
| 1986 | 0.0061 Mt | 2005 | 0.0373 Mt | 2024 | 0.0918 Mt |
| 1987 | 0.0169 Mt | 2006 | 0.0448 Mt | | |
| 1988 | 0.0183 Mt | 2007 | 0.0486 Mt | | |
表を表示
| 1970 | 0.73 t | 1989 | 1.23 t | 2008 | 2.09 t |
| 1971 | 0.72 t | 1990 | 1.17 t | 2009 | 2.33 t |
| 1972 | 0.87 t | 1991 | 1.14 t | 2010 | 2.55 t |
| 1973 | 0.87 t | 1992 | 1.11 t | 2011 | 1.92 t |
| 1974 | 0.76 t | 1993 | 1.06 t | 2012 | 1.88 t |
| 1975 | 0.91 t | 1994 | 1.06 t | 2013 | 2.06 t |
| 1976 | 0.82 t | 1995 | 1.01 t | 2014 | 2.12 t |
| 1977 | 0.9 t | 1996 | 1.29 t | 2015 | 2.08 t |
| 1978 | 0.89 t | 1997 | 1.28 t | 2016 | 2.28 t |
| 1979 | 0.88 t | 1998 | 1.28 t | 2017 | 2.05 t |
| 1980 | 0.85 t | 1999 | 1.27 t | 2018 | 1.92 t |
| 1981 | 1.22 t | 2000 | 1.37 t | 2019 | 2.4 t |
| 1982 | 1.1 t | 2001 | 1.33 t | 2020 | 2.28 t |
| 1983 | 1.03 t | 2002 | 1.44 t | 2021 | 2.23 t |
| 1984 | 0.74 t | 2003 | 1.55 t | 2022 | 2.31 t |
| 1985 | 0.72 t | 2004 | 1.55 t | 2023 | 2.28 t |
| 1986 | 0.44 t | 2005 | 1.58 t | 2024 | 2.33 t |
| 1987 | 1.19 t | 2006 | 1.83 t | | |
| 1988 | 1.25 t | 2007 | 1.92 t | | |