表を表示
| 1970 | 0.6038 Mt | 1989 | 6.2587 Mt | 2008 | 5.5191 Mt |
| 1971 | 1.1169 Mt | 1990 | 6.1713 Mt | 2009 | 5.4491 Mt |
| 1972 | 1.2037 Mt | 1991 | 4.9342 Mt | 2010 | 5.9582 Mt |
| 1973 | 3.8555 Mt | 1992 | 4.9722 Mt | 2011 | 5.82 Mt |
| 1974 | 3.9575 Mt | 1993 | 5.083 Mt | 2012 | 5.89 Mt |
| 1975 | 5.0974 Mt | 1994 | 5.0462 Mt | 2013 | 6.0777 Mt |
| 1976 | 5.9132 Mt | 1995 | 5.671 Mt | 2014 | 6.2671 Mt |
| 1977 | 5.8445 Mt | 1996 | 6.333 Mt | 2015 | 6.4413 Mt |
| 1978 | 6.4961 Mt | 1997 | 6.0492 Mt | 2016 | 6.559 Mt |
| 1979 | 6.3995 Mt | 1998 | 6.9234 Mt | 2017 | 5.7489 Mt |
| 1980 | 6.152 Mt | 1999 | 6.5904 Mt | 2018 | 5.4109 Mt |
| 1981 | 6.4752 Mt | 2000 | 6.6039 Mt | 2019 | 5.6528 Mt |
| 1982 | 6.4583 Mt | 2001 | 6.741 Mt | 2020 | 5.5287 Mt |
| 1983 | 5.9314 Mt | 2002 | 6.4721 Mt | 2021 | 5.3647 Mt |
| 1984 | 6.8603 Mt | 2003 | 7.3423 Mt | 2022 | 5.5833 Mt |
| 1985 | 7.8407 Mt | 2004 | 6.6252 Mt | 2023 | 5.1205 Mt |
| 1986 | 5.6285 Mt | 2005 | 6.3917 Mt | 2024 | 5.1985 Mt |
| 1987 | 4.7994 Mt | 2006 | 5.7072 Mt | | |
| 1988 | 4.9602 Mt | 2007 | 5.1756 Mt | | |
表を表示
| 1970 | 1.01 t | 1989 | 6.54 t | 2008 | 3.43 t |
| 1971 | 1.84 t | 1990 | 6.27 t | 2009 | 3.28 t |
| 1972 | 1.94 t | 1991 | 4.88 t | 2010 | 3.46 t |
| 1973 | 6.08 t | 1992 | 4.79 t | 2011 | 3.27 t |
| 1974 | 6.11 t | 1993 | 4.77 t | 2012 | 3.19 t |
| 1975 | 7.7 t | 1994 | 4.61 t | 2013 | 3.18 t |
| 1976 | 8.73 t | 1995 | 5.05 t | 2014 | 3.17 t |
| 1977 | 8.42 t | 1996 | 5.5 t | 2015 | 3.16 t |
| 1978 | 9.13 t | 1997 | 5.12 t | 2016 | 3.12 t |
| 1979 | 8.77 t | 1998 | 5.71 t | 2017 | 2.67 t |
| 1980 | 8.22 t | 1999 | 5.3 t | 2018 | 2.45 t |
| 1981 | 8.43 t | 2000 | 5.18 t | 2019 | 2.49 t |
| 1982 | 8.18 t | 2001 | 5.15 t | 2020 | 2.38 t |
| 1983 | 7.31 t | 2002 | 4.81 t | 2021 | 2.26 t |
| 1984 | 8.23 t | 2003 | 5.31 t | 2022 | 2.3 t |
| 1985 | 9.15 t | 2004 | 4.66 t | 2023 | 2.06 t |
| 1986 | 6.39 t | 2005 | 4.37 t | 2024 | 2.05 t |
| 1987 | 5.3 t | 2006 | 3.78 t | | |
| 1988 | 5.33 t | 2007 | 3.33 t | | |