表を表示
| 1970 | 17.49 Mt | 1989 | 42.39 Mt | 2008 | 59.26 Mt |
| 1971 | 18.64 Mt | 1990 | 43.86 Mt | 2009 | 58.49 Mt |
| 1972 | 19.03 Mt | 1991 | 45.3 Mt | 2010 | 53.25 Mt |
| 1973 | 21.19 Mt | 1992 | 49 Mt | 2011 | 51.4 Mt |
| 1974 | 21.25 Mt | 1993 | 47.96 Mt | 2012 | 49.78 Mt |
| 1975 | 22.82 Mt | 1994 | 49.4 Mt | 2013 | 48.14 Mt |
| 1976 | 24.13 Mt | 1995 | 52.81 Mt | 2014 | 47.67 Mt |
| 1977 | 23.91 Mt | 1996 | 51.11 Mt | 2015 | 51.72 Mt |
| 1978 | 24.78 Mt | 1997 | 53.59 Mt | 2016 | 50.52 Mt |
| 1979 | 27.55 Mt | 1998 | 58.02 Mt | 2017 | 55.14 Mt |
| 1980 | 28.23 Mt | 1999 | 64.74 Mt | 2018 | 51.11 Mt |
| 1981 | 29.91 Mt | 2000 | 64.24 Mt | 2019 | 46.43 Mt |
| 1982 | 31.8 Mt | 2001 | 63.5 Mt | 2020 | 40.64 Mt |
| 1983 | 30.84 Mt | 2002 | 67.74 Mt | 2021 | 38.96 Mt |
| 1984 | 30.12 Mt | 2003 | 62.8 Mt | 2022 | 39.67 Mt |
| 1985 | 28.67 Mt | 2004 | 64.57 Mt | 2023 | 37.41 Mt |
| 1986 | 32.78 Mt | 2005 | 67.83 Mt | 2024 | 35.56 Mt |
| 1987 | 32.87 Mt | 2006 | 62.94 Mt | | |
| 1988 | 33.92 Mt | 2007 | 61.34 Mt | | |
表を表示
| 1970 | 2.01 t | 1989 | 4.24 t | 2008 | 5.61 t |
| 1971 | 2.16 t | 1990 | 4.39 t | 2009 | 5.53 t |
| 1972 | 2.21 t | 1991 | 4.55 t | 2010 | 5.04 t |
| 1973 | 2.45 t | 1992 | 4.92 t | 2011 | 4.87 t |
| 1974 | 2.43 t | 1993 | 4.81 t | 2012 | 4.73 t |
| 1975 | 2.51 t | 1994 | 4.94 t | 2013 | 4.6 t |
| 1976 | 2.58 t | 1995 | 5.27 t | 2014 | 4.58 t |
| 1977 | 2.53 t | 1996 | 5.08 t | 2015 | 4.99 t |
| 1978 | 2.59 t | 1997 | 5.3 t | 2016 | 4.89 t |
| 1979 | 2.85 t | 1998 | 5.71 t | 2017 | 5.35 t |
| 1980 | 2.89 t | 1999 | 6.34 t | 2018 | 4.97 t |
| 1981 | 3.04 t | 2000 | 6.24 t | 2019 | 4.51 t |
| 1982 | 3.21 t | 2001 | 6.13 t | 2020 | 3.95 t |
| 1983 | 3.1 t | 2002 | 6.5 t | 2021 | 3.76 t |
| 1984 | 3.01 t | 2003 | 6 t | 2022 | 3.8 t |
| 1985 | 2.86 t | 2004 | 6.16 t | 2023 | 3.54 t |
| 1986 | 3.27 t | 2005 | 6.46 t | 2024 | 3.32 t |
| 1987 | 3.28 t | 2006 | 5.98 t | | |
| 1988 | 3.39 t | 2007 | 5.82 t | | |