表を表示
| 1970 | 0.0148 Mt | 1989 | 0.0213 Mt | 2008 | 0.0804 Mt |
| 1971 | 0.0148 Mt | 1990 | 0.0208 Mt | 2009 | 0.0905 Mt |
| 1972 | 0.018 Mt | 1991 | 0.0278 Mt | 2010 | 0.0987 Mt |
| 1973 | 0.0181 Mt | 1992 | 0.0279 Mt | 2011 | 0.0778 Mt |
| 1974 | 0.0162 Mt | 1993 | 0.0337 Mt | 2012 | 0.0798 Mt |
| 1975 | 0.0195 Mt | 1994 | 0.04 Mt | 2013 | 0.091 Mt |
| 1976 | 0.0177 Mt | 1995 | 0.0337 Mt | 2014 | 0.0973 Mt |
| 1977 | 0.0196 Mt | 1996 | 0.039 Mt | 2015 | 0.1019 Mt |
| 1978 | 0.0196 Mt | 1997 | 0.04 Mt | 2016 | 0.1115 Mt |
| 1979 | 0.0194 Mt | 1998 | 0.041 Mt | 2017 | 0.104 Mt |
| 1980 | 0.0191 Mt | 1999 | 0.0415 Mt | 2018 | 0.1111 Mt |
| 1981 | 0.0188 Mt | 2000 | 0.0497 Mt | 2019 | 0.1302 Mt |
| 1982 | 0.0176 Mt | 2001 | 0.0508 Mt | 2020 | 0.1196 Mt |
| 1983 | 0.0172 Mt | 2002 | 0.058 Mt | 2021 | 0.1162 Mt |
| 1984 | 0.0191 Mt | 2003 | 0.0603 Mt | 2022 | 0.1301 Mt |
| 1985 | 0.0192 Mt | 2004 | 0.0654 Mt | 2023 | 0.1305 Mt |
| 1986 | 0.0171 Mt | 2005 | 0.0608 Mt | 2024 | 0.1351 Mt |
| 1987 | 0.0182 Mt | 2006 | 0.0693 Mt | | |
| 1988 | 0.0208 Mt | 2007 | 0.0765 Mt | | |
表を表示
| 1970 | 0.33 t | 1989 | 0.52 t | 2008 | 1.72 t |
| 1971 | 0.33 t | 1990 | 0.51 t | 2009 | 1.93 t |
| 1972 | 0.41 t | 1991 | 0.69 t | 2010 | 2.11 t |
| 1973 | 0.41 t | 1992 | 0.69 t | 2011 | 1.66 t |
| 1974 | 0.37 t | 1993 | 0.82 t | 2012 | 1.7 t |
| 1975 | 0.45 t | 1994 | 0.96 t | 2013 | 1.93 t |
| 1976 | 0.41 t | 1995 | 0.8 t | 2014 | 2.07 t |
| 1977 | 0.45 t | 1996 | 0.91 t | 2015 | 2.16 t |
| 1978 | 0.45 t | 1997 | 0.92 t | 2016 | 2.37 t |
| 1979 | 0.45 t | 1998 | 0.93 t | 2017 | 2.21 t |
| 1980 | 0.45 t | 1999 | 0.93 t | 2018 | 2.36 t |
| 1981 | 0.44 t | 2000 | 1.1 t | 2019 | 2.77 t |
| 1982 | 0.41 t | 2001 | 1.11 t | 2020 | 2.55 t |
| 1983 | 0.41 t | 2002 | 1.26 t | 2021 | 2.48 t |
| 1984 | 0.45 t | 2003 | 1.31 t | 2022 | 2.79 t |
| 1985 | 0.46 t | 2004 | 1.41 t | 2023 | 2.79 t |
| 1986 | 0.41 t | 2005 | 1.31 t | 2024 | 2.88 t |
| 1987 | 0.44 t | 2006 | 1.49 t | | |
| 1988 | 0.51 t | 2007 | 1.64 t | | |