表を表示
| 1970 | 0.0695 Mt | 1989 | 0.1375 Mt | 2008 | 0.4311 Mt |
| 1971 | 0.0695 Mt | 1990 | 0.1438 Mt | 2009 | 0.4717 Mt |
| 1972 | 0.0596 Mt | 1991 | 0.203 Mt | 2010 | 0.4748 Mt |
| 1973 | 0.06 Mt | 1992 | 0.241 Mt | 2011 | 0.4592 Mt |
| 1974 | 0.06 Mt | 1993 | 0.2441 Mt | 2012 | 0.4686 Mt |
| 1975 | 0.063 Mt | 1994 | 0.2882 Mt | 2013 | 0.4998 Mt |
| 1976 | 0.0625 Mt | 1995 | 0.2819 Mt | 2014 | 0.5373 Mt |
| 1977 | 0.0594 Mt | 1996 | 0.2882 Mt | 2015 | 0.5872 Mt |
| 1978 | 0.0562 Mt | 1997 | 0.2975 Mt | 2016 | 0.6123 Mt |
| 1979 | 0.0788 Mt | 1998 | 0.3132 Mt | 2017 | 0.6498 Mt |
| 1980 | 0.094 Mt | 1999 | 0.3257 Mt | 2018 | 0.6897 Mt |
| 1981 | 0.0876 Mt | 2000 | 0.3412 Mt | 2019 | 0.7174 Mt |
| 1982 | 0.0976 Mt | 2001 | 0.35 Mt | 2020 | 0.6394 Mt |
| 1983 | 0.0882 Mt | 2002 | 0.3562 Mt | 2021 | 0.6416 Mt |
| 1984 | 0.0849 Mt | 2003 | 0.3625 Mt | 2022 | 0.6357 Mt |
| 1985 | 0.0912 Mt | 2004 | 0.3938 Mt | 2023 | 0.6292 Mt |
| 1986 | 0.1171 Mt | 2005 | 0.4063 Mt | 2024 | 0.6351 Mt |
| 1987 | 0.1286 Mt | 2006 | 0.425 Mt | | |
| 1988 | 0.1439 Mt | 2007 | 0.4218 Mt | | |
表を表示
| 1970 | 2.61 t | 1989 | 4.99 t | 2008 | 14.17 t |
| 1971 | 2.57 t | 1990 | 5.29 t | 2009 | 15.3 t |
| 1972 | 2.18 t | 1991 | 7.55 t | 2010 | 15.19 t |
| 1973 | 2.18 t | 1992 | 8.97 t | 2011 | 14.5 t |
| 1974 | 2.16 t | 1993 | 9.02 t | 2012 | 14.63 t |
| 1975 | 2.25 t | 1994 | 10.58 t | 2013 | 15.42 t |
| 1976 | 2.22 t | 1995 | 10.3 t | 2014 | 16.37 t |
| 1977 | 2.1 t | 1996 | 10.48 t | 2015 | 17.69 t |
| 1978 | 1.98 t | 1997 | 10.79 t | 2016 | 18.19 t |
| 1979 | 2.76 t | 1998 | 11.33 t | 2017 | 18.98 t |
| 1980 | 3.28 t | 1999 | 11.76 t | 2018 | 19.79 t |
| 1981 | 3.05 t | 2000 | 12.31 t | 2019 | 20.21 t |
| 1982 | 3.39 t | 2001 | 12.66 t | 2020 | 17.68 t |
| 1983 | 3.07 t | 2002 | 12.8 t | 2021 | 17.41 t |
| 1984 | 2.96 t | 2003 | 12.82 t | 2022 | 16.9 t |
| 1985 | 3.2 t | 2004 | 13.71 t | 2023 | 16.36 t |
| 1986 | 4.13 t | 2005 | 13.93 t | 2024 | 16.15 t |
| 1987 | 4.58 t | 2006 | 14.36 t | | |
| 1988 | 5.17 t | 2007 | 14.06 t | | |