表を表示
| 1970 | 0.0107 Mt | 1989 | 0.0673 Mt | 2008 | 0.3109 Mt |
| 1971 | 0.0108 Mt | 1990 | 0.0697 Mt | 2009 | 0.3372 Mt |
| 1972 | 0.0115 Mt | 1991 | 0.0723 Mt | 2010 | 0.3344 Mt |
| 1973 | 0.0135 Mt | 1992 | 0.0793 Mt | 2011 | 0.3708 Mt |
| 1974 | 0.0163 Mt | 1993 | 0.1037 Mt | 2012 | 0.6288 Mt |
| 1975 | 0.0137 Mt | 1994 | 0.1065 Mt | 2013 | 0.7585 Mt |
| 1976 | 0.0135 Mt | 1995 | 0.0968 Mt | 2014 | 0.7441 Mt |
| 1977 | 0.0141 Mt | 1996 | 0.1198 Mt | 2015 | 0.6952 Mt |
| 1978 | 0.014 Mt | 1997 | 0.1233 Mt | 2016 | 0.6609 Mt |
| 1979 | 0.0149 Mt | 1998 | 0.1895 Mt | 2017 | 0.6218 Mt |
| 1980 | 0.0159 Mt | 1999 | 0.3038 Mt | 2018 | 0.6666 Mt |
| 1981 | 0.0157 Mt | 2000 | 0.3496 Mt | 2019 | 0.7283 Mt |
| 1982 | 0.0156 Mt | 2001 | 0.2656 Mt | 2020 | 0.6794 Mt |
| 1983 | 0.0224 Mt | 2002 | 0.2492 Mt | 2021 | 0.7107 Mt |
| 1984 | 0.029 Mt | 2003 | 0.2639 Mt | 2022 | 0.6946 Mt |
| 1985 | 0.0429 Mt | 2004 | 0.5158 Mt | 2023 | 0.6644 Mt |
| 1986 | 0.0491 Mt | 2005 | 0.3496 Mt | 2024 | 0.6994 Mt |
| 1987 | 0.0558 Mt | 2006 | 0.3409 Mt | | |
| 1988 | 0.0698 Mt | 2007 | 0.3133 Mt | | |
表を表示
| 1970 | 0.02 t | 1989 | 0.09 t | 2008 | 0.3 t |
| 1971 | 0.02 t | 1990 | 0.09 t | 2009 | 0.32 t |
| 1972 | 0.02 t | 1991 | 0.09 t | 2010 | 0.31 t |
| 1973 | 0.02 t | 1992 | 0.1 t | 2011 | 0.33 t |
| 1974 | 0.03 t | 1993 | 0.13 t | 2012 | 0.55 t |
| 1975 | 0.02 t | 1994 | 0.13 t | 2013 | 0.65 t |
| 1976 | 0.02 t | 1995 | 0.11 t | 2014 | 0.63 t |
| 1977 | 0.02 t | 1996 | 0.13 t | 2015 | 0.58 t |
| 1978 | 0.02 t | 1997 | 0.13 t | 2016 | 0.54 t |
| 1979 | 0.02 t | 1998 | 0.2 t | 2017 | 0.5 t |
| 1980 | 0.02 t | 1999 | 0.36 t | 2018 | 0.52 t |
| 1981 | 0.02 t | 2000 | 0.47 t | 2019 | 0.56 t |
| 1982 | 0.02 t | 2001 | 0.33 t | 2020 | 0.51 t |
| 1983 | 0.03 t | 2002 | 0.28 t | 2021 | 0.53 t |
| 1984 | 0.04 t | 2003 | 0.29 t | 2022 | 0.51 t |
| 1985 | 0.06 t | 2004 | 0.56 t | 2023 | 0.48 t |
| 1986 | 0.07 t | 2005 | 0.37 t | 2024 | 0.5 t |
| 1987 | 0.08 t | 2006 | 0.35 t | | |
| 1988 | 0.1 t | 2007 | 0.31 t | | |