表を表示
| 1970 | 19.29 Mt | 1989 | 31.35 Mt | 2008 | 7.9275 Mt |
| 1971 | 19.3 Mt | 1990 | 31.82 Mt | 2009 | 7.808 Mt |
| 1972 | 20.42 Mt | 1991 | 25.65 Mt | 2010 | 8.5049 Mt |
| 1973 | 21.75 Mt | 1992 | 20.41 Mt | 2011 | 8.5348 Mt |
| 1974 | 22.97 Mt | 1993 | 17.36 Mt | 2012 | 8.3528 Mt |
| 1975 | 24.64 Mt | 1994 | 14.08 Mt | 2013 | 7.4941 Mt |
| 1976 | 25.47 Mt | 1995 | 12.26 Mt | 2014 | 8.0409 Mt |
| 1977 | 26.06 Mt | 1996 | 10.56 Mt | 2015 | 8.2992 Mt |
| 1978 | 27.05 Mt | 1997 | 9.6327 Mt | 2016 | 8.4234 Mt |
| 1979 | 27.71 Mt | 1998 | 8.7879 Mt | 2017 | 8.3058 Mt |
| 1980 | 28.83 Mt | 1999 | 7.4496 Mt | 2018 | 8.8624 Mt |
| 1981 | 28.77 Mt | 2000 | 6.8956 Mt | 2019 | 9.1101 Mt |
| 1982 | 29.08 Mt | 2001 | 7.1817 Mt | 2020 | 8.8484 Mt |
| 1983 | 29.31 Mt | 2002 | 7.3093 Mt | 2021 | 9.6527 Mt |
| 1984 | 29.55 Mt | 2003 | 7.8708 Mt | 2022 | 8.2882 Mt |
| 1985 | 29.76 Mt | 2004 | 7.8917 Mt | 2023 | 8.2074 Mt |
| 1986 | 30.59 Mt | 2005 | 8.3311 Mt | 2024 | 8.2081 Mt |
| 1987 | 31.32 Mt | 2006 | 8.112 Mt | | |
| 1988 | 31.53 Mt | 2007 | 8.0256 Mt | | |
表を表示
| 1970 | 7.91 t | 1989 | 10.56 t | 2008 | 2.76 t |
| 1971 | 7.85 t | 1990 | 10.68 t | 2009 | 2.73 t |
| 1972 | 8.22 t | 1991 | 8.6 t | 2010 | 2.97 t |
| 1973 | 8.66 t | 1992 | 6.85 t | 2011 | 2.98 t |
| 1974 | 9.05 t | 1993 | 5.83 t | 2012 | 2.92 t |
| 1975 | 9.6 t | 1994 | 4.75 t | 2013 | 2.62 t |
| 1976 | 9.81 t | 1995 | 4.15 t | 2014 | 2.81 t |
| 1977 | 9.92 t | 1996 | 3.58 t | 2015 | 2.93 t |
| 1978 | 10.18 t | 1997 | 3.28 t | 2016 | 3 t |
| 1979 | 10.33 t | 1998 | 2.99 t | 2017 | 3.01 t |
| 1980 | 10.64 t | 1999 | 2.54 t | 2018 | 3.27 t |
| 1981 | 10.51 t | 2000 | 2.36 t | 2019 | 3.42 t |
| 1982 | 10.53 t | 2001 | 2.46 t | 2020 | 3.36 t |
| 1983 | 10.5 t | 2002 | 2.51 t | 2021 | 3.72 t |
| 1984 | 10.48 t | 2003 | 2.71 t | 2022 | 3.28 t |
| 1985 | 10.44 t | 2004 | 2.73 t | 2023 | 3.34 t |
| 1986 | 10.61 t | 2005 | 2.88 t | 2024 | 3.42 t |
| 1987 | 10.74 t | 2006 | 2.82 t | | |
| 1988 | 10.69 t | 2007 | 2.79 t | | |