表を表示
| 1970 | 0.3034 Mt | 1989 | 0.8707 Mt | 2008 | 1.5974 Mt |
| 1971 | 0.3034 Mt | 1990 | 0.9437 Mt | 2009 | 1.6937 Mt |
| 1972 | 0.3233 Mt | 1991 | 0.9621 Mt | 2010 | 1.7202 Mt |
| 1973 | 0.3883 Mt | 1992 | 1.0895 Mt | 2011 | 1.6889 Mt |
| 1974 | 0.4759 Mt | 1993 | 1.2105 Mt | 2012 | 1.743 Mt |
| 1975 | 0.3935 Mt | 1994 | 1.324 Mt | 2013 | 1.8152 Mt |
| 1976 | 0.3877 Mt | 1995 | 1.2013 Mt | 2014 | 2.0891 Mt |
| 1977 | 0.4092 Mt | 1996 | 1.3914 Mt | 2015 | 2.759 Mt |
| 1978 | 0.4061 Mt | 1997 | 1.4782 Mt | 2016 | 2.6259 Mt |
| 1979 | 0.4361 Mt | 1998 | 1.6292 Mt | 2017 | 2.8865 Mt |
| 1980 | 0.4694 Mt | 1999 | 1.7188 Mt | 2018 | 2.1256 Mt |
| 1981 | 0.4502 Mt | 2000 | 1.4592 Mt | 2019 | 2.2473 Mt |
| 1982 | 0.4719 Mt | 2001 | 1.5597 Mt | 2020 | 2.2329 Mt |
| 1983 | 0.6483 Mt | 2002 | 1.7113 Mt | 2021 | 2.0473 Mt |
| 1984 | 0.6286 Mt | 2003 | 1.7562 Mt | 2022 | 1.6785 Mt |
| 1985 | 0.5694 Mt | 2004 | 2.0348 Mt | 2023 | 1.6805 Mt |
| 1986 | 0.7057 Mt | 2005 | 2.0474 Mt | 2024 | 1.7349 Mt |
| 1987 | 0.8708 Mt | 2006 | 2.0343 Mt | | |
| 1988 | 0.8489 Mt | 2007 | 1.9277 Mt | | |
表を表示
| 1970 | 1.18 t | 1989 | 2.68 t | 2008 | 2.95 t |
| 1971 | 1.23 t | 1990 | 2.82 t | 2009 | 3.17 t |
| 1972 | 1.32 t | 1991 | 2.74 t | 2010 | 3.2 t |
| 1973 | 1.6 t | 1992 | 2.94 t | 2011 | 3.07 t |
| 1974 | 1.98 t | 1993 | 3.15 t | 2012 | 3.07 t |
| 1975 | 1.65 t | 1994 | 3.34 t | 2013 | 3.07 t |
| 1976 | 1.65 t | 1995 | 2.94 t | 2014 | 3.36 t |
| 1977 | 1.76 t | 1996 | 3.35 t | 2015 | 4.29 t |
| 1978 | 1.75 t | 1997 | 3.54 t | 2016 | 4.02 t |
| 1979 | 1.85 t | 1998 | 3.86 t | 2017 | 4.45 t |
| 1980 | 1.96 t | 1999 | 4.02 t | 2018 | 3.23 t |
| 1981 | 1.84 t | 2000 | 3.39 t | 2019 | 3.34 t |
| 1982 | 1.85 t | 2001 | 3.59 t | 2020 | 3.26 t |
| 1983 | 2.41 t | 2002 | 3.9 t | 2021 | 3 t |
| 1984 | 2.22 t | 2003 | 3.96 t | 2022 | 2.48 t |
| 1985 | 1.97 t | 2004 | 4.48 t | 2023 | 2.48 t |
| 1986 | 2.38 t | 2005 | 4.32 t | 2024 | 2.53 t |
| 1987 | 2.84 t | 2006 | 4.08 t | | |
| 1988 | 2.69 t | 2007 | 3.7 t | | |