表を表示
| 1970 | 0.1388 Mt | 1989 | 0.3626 Mt | 2008 | 0.2789 Mt |
| 1971 | 0.1387 Mt | 1990 | 0.2525 Mt | 2009 | 0.2447 Mt |
| 1972 | 0.169 Mt | 1991 | 0.2279 Mt | 2010 | 0.309 Mt |
| 1973 | 0.1705 Mt | 1992 | 0.1801 Mt | 2011 | 0.1534 Mt |
| 1974 | 0.1519 Mt | 1993 | 0.2011 Mt | 2012 | 0.1777 Mt |
| 1975 | 0.1839 Mt | 1994 | 0.1992 Mt | 2013 | 0.198 Mt |
| 1976 | 0.1667 Mt | 1995 | 0.2003 Mt | 2014 | 0.272 Mt |
| 1977 | 0.1841 Mt | 1996 | 0.2043 Mt | 2015 | 0.2307 Mt |
| 1978 | 0.1841 Mt | 1997 | 0.2097 Mt | 2016 | 0.3117 Mt |
| 1979 | 0.1821 Mt | 1998 | 0.2147 Mt | 2017 | 0.2853 Mt |
| 1980 | 0.18 Mt | 1999 | 0.2175 Mt | 2018 | 0.3009 Mt |
| 1981 | 0.1535 Mt | 2000 | 0.1504 Mt | 2019 | 0.3025 Mt |
| 1982 | 0.1521 Mt | 2001 | 0.1487 Mt | 2020 | 0.2142 Mt |
| 1983 | 0.1576 Mt | 2002 | 0.1656 Mt | 2021 | 0.2447 Mt |
| 1984 | 0.1705 Mt | 2003 | 0.171 Mt | 2022 | 0.2575 Mt |
| 1985 | 0.1664 Mt | 2004 | 0.173 Mt | 2023 | 0.2583 Mt |
| 1986 | 0.163 Mt | 2005 | 0.186 Mt | 2024 | 0.2673 Mt |
| 1987 | 0.2483 Mt | 2006 | 0.2316 Mt | | |
| 1988 | 0.2916 Mt | 2007 | 0.2771 Mt | | |
表を表示
| 1970 | 2.66 t | 1989 | 6.35 t | 2008 | 4.41 t |
| 1971 | 2.64 t | 1990 | 4.39 t | 2009 | 3.85 t |
| 1972 | 3.2 t | 1991 | 3.93 t | 2010 | 4.85 t |
| 1973 | 3.22 t | 1992 | 3.08 t | 2011 | 2.41 t |
| 1974 | 2.86 t | 1993 | 3.42 t | 2012 | 2.79 t |
| 1975 | 3.46 t | 1994 | 3.37 t | 2013 | 3.11 t |
| 1976 | 3.13 t | 1995 | 3.36 t | 2014 | 4.28 t |
| 1977 | 3.45 t | 1996 | 3.42 t | 2015 | 3.64 t |
| 1978 | 3.45 t | 1997 | 3.48 t | 2016 | 4.91 t |
| 1979 | 3.4 t | 1998 | 3.54 t | 2017 | 4.49 t |
| 1980 | 3.35 t | 1999 | 3.56 t | 2018 | 4.71 t |
| 1981 | 2.84 t | 2000 | 2.44 t | 2019 | 4.72 t |
| 1982 | 2.8 t | 2001 | 2.4 t | 2020 | 3.33 t |
| 1983 | 2.88 t | 2002 | 2.66 t | 2021 | 3.79 t |
| 1984 | 3.09 t | 2003 | 2.74 t | 2022 | 3.98 t |
| 1985 | 3 t | 2004 | 2.77 t | 2023 | 3.99 t |
| 1986 | 2.92 t | 2005 | 2.97 t | 2024 | 4.14 t |
| 1987 | 4.41 t | 2006 | 3.69 t | | |
| 1988 | 5.14 t | 2007 | 4.4 t | | |