表を表示
| 1970 | 124.98 Mt | 1989 | 214.9 Mt | 2008 | 105.37 Mt |
| 1971 | 125.78 Mt | 1990 | 187.73 Mt | 2009 | 85.69 Mt |
| 1972 | 131.26 Mt | 1991 | 152.01 Mt | 2010 | 83.34 Mt |
| 1973 | 143.44 Mt | 1992 | 138.36 Mt | 2011 | 89.82 Mt |
| 1974 | 145.63 Mt | 1993 | 131.1 Mt | 2012 | 87.63 Mt |
| 1975 | 157.71 Mt | 1994 | 128.16 Mt | 2013 | 79.53 Mt |
| 1976 | 173.64 Mt | 1995 | 133.41 Mt | 2014 | 78.99 Mt |
| 1977 | 181.97 Mt | 1996 | 136.56 Mt | 2015 | 80.3 Mt |
| 1978 | 197.5 Mt | 1997 | 124.32 Mt | 2016 | 78.71 Mt |
| 1979 | 202.32 Mt | 1998 | 108.98 Mt | 2017 | 81.8 Mt |
| 1980 | 200.15 Mt | 1999 | 93.19 Mt | 2018 | 83 Mt |
| 1981 | 201.07 Mt | 2000 | 97.5 Mt | 2019 | 81.15 Mt |
| 1982 | 200.42 Mt | 2001 | 104.41 Mt | 2020 | 75.7 Mt |
| 1983 | 202.7 Mt | 2002 | 103.4 Mt | 2021 | 80.75 Mt |
| 1984 | 200.07 Mt | 2003 | 107.85 Mt | 2022 | 75.68 Mt |
| 1985 | 199.09 Mt | 2004 | 105.58 Mt | 2023 | 70.25 Mt |
| 1986 | 204.92 Mt | 2005 | 104.49 Mt | 2024 | 70.88 Mt |
| 1987 | 212.28 Mt | 2006 | 110.84 Mt | | |
| 1988 | 216.41 Mt | 2007 | 107.09 Mt | | |
表を表示
| 1970 | 6.17 t | 1989 | 9.28 t | 2008 | 5.13 t |
| 1971 | 6.15 t | 1990 | 8.09 t | 2009 | 4.21 t |
| 1972 | 6.35 t | 1991 | 6.61 t | 2010 | 4.12 t |
| 1973 | 6.88 t | 1992 | 6.07 t | 2011 | 4.46 t |
| 1974 | 6.93 t | 1993 | 5.76 t | 2012 | 4.37 t |
| 1975 | 7.41 t | 1994 | 5.64 t | 2013 | 3.98 t |
| 1976 | 8.06 t | 1995 | 5.88 t | 2014 | 3.97 t |
| 1977 | 8.36 t | 1996 | 6.04 t | 2015 | 4.05 t |
| 1978 | 9 t | 1997 | 5.51 t | 2016 | 3.99 t |
| 1979 | 9.16 t | 1998 | 4.84 t | 2017 | 4.18 t |
| 1980 | 9.01 t | 1999 | 4.15 t | 2018 | 4.26 t |
| 1981 | 8.99 t | 2000 | 4.34 t | 2019 | 4.19 t |
| 1982 | 8.92 t | 2001 | 4.72 t | 2020 | 3.93 t |
| 1983 | 8.98 t | 2002 | 4.76 t | 2021 | 4.22 t |
| 1984 | 8.84 t | 2003 | 5 t | 2022 | 3.97 t |
| 1985 | 8.76 t | 2004 | 4.92 t | 2023 | 3.69 t |
| 1986 | 8.97 t | 2005 | 4.9 t | 2024 | 3.72 t |
| 1987 | 9.25 t | 2006 | 5.23 t | | |
| 1988 | 9.39 t | 2007 | 5.13 t | | |