表を表示
| 1970 | 75.98 Mt | 1989 | 137.69 Mt | 2008 | 74.48 Mt |
| 1971 | 76.32 Mt | 1990 | 131.96 Mt | 2009 | 71.67 Mt |
| 1972 | 79.3 Mt | 1991 | 126.92 Mt | 2010 | 69.04 Mt |
| 1973 | 81.03 Mt | 1992 | 112.24 Mt | 2011 | 50.81 Mt |
| 1974 | 84.13 Mt | 1993 | 104.01 Mt | 2012 | 49.02 Mt |
| 1975 | 87.85 Mt | 1994 | 95.19 Mt | 2013 | 37.91 Mt |
| 1976 | 93.13 Mt | 1995 | 89.1 Mt | 2014 | 41.61 Mt |
| 1977 | 98.34 Mt | 1996 | 79.06 Mt | 2015 | 32.65 Mt |
| 1978 | 103.67 Mt | 1997 | 76.67 Mt | 2016 | 36.03 Mt |
| 1979 | 111.97 Mt | 1998 | 62.87 Mt | 2017 | 73.54 Mt |
| 1980 | 117.87 Mt | 1999 | 68.57 Mt | 2018 | 66.4 Mt |
| 1981 | 120.98 Mt | 2000 | 73.81 Mt | 2019 | 73.41 Mt |
| 1982 | 126.52 Mt | 2001 | 76.67 Mt | 2020 | 69.05 Mt |
| 1983 | 131.05 Mt | 2002 | 73.44 Mt | 2021 | 57.29 Mt |
| 1984 | 135.64 Mt | 2003 | 74.98 Mt | 2022 | 59.8 Mt |
| 1985 | 140.05 Mt | 2004 | 76.52 Mt | 2023 | 65.66 Mt |
| 1986 | 138.37 Mt | 2005 | 79.74 Mt | 2024 | 66.24 Mt |
| 1987 | 133.25 Mt | 2006 | 81.25 Mt | | |
| 1988 | 136.64 Mt | 2007 | 67.99 Mt | | |
表を表示
| 1970 | 5.01 t | 1989 | 6.62 t | 2008 | 3.01 t |
| 1971 | 4.9 t | 1990 | 6.25 t | 2009 | 2.88 t |
| 1972 | 4.96 t | 1991 | 5.92 t | 2010 | 2.76 t |
| 1973 | 4.96 t | 1992 | 5.16 t | 2011 | 2.02 t |
| 1974 | 5.05 t | 1993 | 4.71 t | 2012 | 1.94 t |
| 1975 | 5.18 t | 1994 | 4.25 t | 2013 | 1.5 t |
| 1976 | 5.4 t | 1995 | 3.93 t | 2014 | 1.63 t |
| 1977 | 5.62 t | 1996 | 3.45 t | 2015 | 1.28 t |
| 1978 | 5.84 t | 1997 | 3.32 t | 2016 | 1.4 t |
| 1979 | 6.23 t | 1998 | 2.7 t | 2017 | 2.85 t |
| 1980 | 6.46 t | 1999 | 2.92 t | 2018 | 2.56 t |
| 1981 | 6.54 t | 2000 | 3.12 t | 2019 | 2.82 t |
| 1982 | 6.74 t | 2001 | 3.22 t | 2020 | 2.64 t |
| 1983 | 6.88 t | 2002 | 3.07 t | 2021 | 2.18 t |
| 1984 | 7.02 t | 2003 | 3.11 t | 2022 | 2.27 t |
| 1985 | 7.14 t | 2004 | 3.16 t | 2023 | 2.49 t |
| 1986 | 6.95 t | 2005 | 3.27 t | 2024 | 2.5 t |
| 1987 | 6.59 t | 2006 | 3.31 t | | |
| 1988 | 6.66 t | 2007 | 2.76 t | | |