表を表示
| 1970 | 0.0008 Mt | 1989 | 0.0011 Mt | 2008 | 0.6323 Mt |
| 1971 | 0.0008 Mt | 1990 | 0.0011 Mt | 2009 | 0.5504 Mt |
| 1972 | 0.0008 Mt | 1991 | 0.0012 Mt | 2010 | 0.6428 Mt |
| 1973 | 0.0009 Mt | 1992 | 0.0012 Mt | 2011 | 0.6829 Mt |
| 1974 | 0.0009 Mt | 1993 | 0.0012 Mt | 2012 | 0.5389 Mt |
| 1975 | 0.0009 Mt | 1994 | 0.0012 Mt | 2013 | 0.5374 Mt |
| 1976 | 0.0009 Mt | 1995 | 0.0012 Mt | 2014 | 0.4808 Mt |
| 1977 | 0.0009 Mt | 1996 | 0.0013 Mt | 2015 | 0.5188 Mt |
| 1978 | 0.0009 Mt | 1997 | 0.0013 Mt | 2016 | 0.5159 Mt |
| 1979 | 0.0009 Mt | 1998 | 0.0013 Mt | 2017 | 0.5031 Mt |
| 1980 | 0.0009 Mt | 1999 | 0.0013 Mt | 2018 | 0.5083 Mt |
| 1981 | 0.001 Mt | 2000 | 0.0013 Mt | 2019 | 0.5239 Mt |
| 1982 | 0.001 Mt | 2001 | 0.0014 Mt | 2020 | 0.5275 Mt |
| 1983 | 0.001 Mt | 2002 | 0.0014 Mt | 2021 | 0.5484 Mt |
| 1984 | 0.001 Mt | 2003 | 0.0014 Mt | 2022 | 0.5904 Mt |
| 1985 | 0.001 Mt | 2004 | 0.6039 Mt | 2023 | 0.5849 Mt |
| 1986 | 0.0011 Mt | 2005 | 0.6108 Mt | 2024 | 0.5941 Mt |
| 1987 | 0.0011 Mt | 2006 | 0.6246 Mt | | |
| 1988 | 0.0011 Mt | 2007 | 0.6153 Mt | | |
表を表示
| 1970 | 0.02 t | 1989 | 0.02 t | 2008 | 11.23 t |
| 1971 | 0.02 t | 1990 | 0.02 t | 2009 | 9.77 t |
| 1972 | 0.02 t | 1991 | 0.02 t | 2010 | 11.37 t |
| 1973 | 0.02 t | 1992 | 0.02 t | 2011 | 12 t |
| 1974 | 0.02 t | 1993 | 0.02 t | 2012 | 9.49 t |
| 1975 | 0.02 t | 1994 | 0.02 t | 2013 | 9.51 t |
| 1976 | 0.02 t | 1995 | 0.02 t | 2014 | 8.54 t |
| 1977 | 0.02 t | 1996 | 0.02 t | 2015 | 9.25 t |
| 1978 | 0.02 t | 1997 | 0.02 t | 2016 | 9.18 t |
| 1979 | 0.02 t | 1998 | 0.02 t | 2017 | 8.96 t |
| 1980 | 0.02 t | 1999 | 0.02 t | 2018 | 9.07 t |
| 1981 | 0.02 t | 2000 | 0.02 t | 2019 | 9.32 t |
| 1982 | 0.02 t | 2001 | 0.02 t | 2020 | 9.36 t |
| 1983 | 0.02 t | 2002 | 0.02 t | 2021 | 9.68 t |
| 1984 | 0.02 t | 2003 | 0.02 t | 2022 | 10.42 t |
| 1985 | 0.02 t | 2004 | 10.61 t | 2023 | 10.29 t |
| 1986 | 0.02 t | 2005 | 10.73 t | 2024 | 10.45 t |
| 1987 | 0.02 t | 2006 | 11 t | | |
| 1988 | 0.02 t | 2007 | 10.88 t | | |