表を表示
| 1970 | 0.627 Mt | 1989 | 0.5715 Mt | 2008 | 1.4601 Mt |
| 1971 | 0.6274 Mt | 1990 | 1.0976 Mt | 2009 | 1.452 Mt |
| 1972 | 0.7219 Mt | 1991 | 1.2519 Mt | 2010 | 1.7497 Mt |
| 1973 | 0.7507 Mt | 1992 | 1.2248 Mt | 2011 | 1.9566 Mt |
| 1974 | 0.6766 Mt | 1993 | 1.2303 Mt | 2012 | 2.4449 Mt |
| 1975 | 0.7519 Mt | 1994 | 1.2371 Mt | 2013 | 2.2883 Mt |
| 1976 | 0.7148 Mt | 1995 | 1.2612 Mt | 2014 | 2.6212 Mt |
| 1977 | 0.7828 Mt | 1996 | 1.2451 Mt | 2015 | 2.7261 Mt |
| 1978 | 0.8019 Mt | 1997 | 1.2818 Mt | 2016 | 2.9607 Mt |
| 1979 | 0.7926 Mt | 1998 | 1.3026 Mt | 2017 | 2.4504 Mt |
| 1980 | 0.7747 Mt | 1999 | 1.2755 Mt | 2018 | 2.1512 Mt |
| 1981 | 0.6573 Mt | 2000 | 1.4802 Mt | 2019 | 2.6613 Mt |
| 1982 | 0.5821 Mt | 2001 | 1.5206 Mt | 2020 | 2.6044 Mt |
| 1983 | 0.4283 Mt | 2002 | 1.1182 Mt | 2021 | 2.7191 Mt |
| 1984 | 0.3783 Mt | 2003 | 1.2348 Mt | 2022 | 2.8628 Mt |
| 1985 | 0.4912 Mt | 2004 | 1.3939 Mt | 2023 | 2.496 Mt |
| 1986 | 0.4973 Mt | 2005 | 1.6888 Mt | 2024 | 2.5765 Mt |
| 1987 | 0.3947 Mt | 2006 | 1.5314 Mt | | |
| 1988 | 0.4807 Mt | 2007 | 1.4148 Mt | | |
表を表示
| 1970 | 1.65 t | 1989 | 1.4 t | 2008 | 2.72 t |
| 1971 | 1.6 t | 1990 | 2.66 t | 2009 | 2.67 t |
| 1972 | 1.82 t | 1991 | 3.02 t | 2010 | 3.18 t |
| 1973 | 1.9 t | 1992 | 2.93 t | 2011 | 3.52 t |
| 1974 | 1.72 t | 1993 | 2.93 t | 2012 | 4.35 t |
| 1975 | 1.92 t | 1994 | 2.93 t | 2013 | 4.02 t |
| 1976 | 1.84 t | 1995 | 2.94 t | 2014 | 4.56 t |
| 1977 | 2.03 t | 1996 | 2.84 t | 2015 | 4.69 t |
| 1978 | 2.1 t | 1997 | 2.86 t | 2016 | 5.04 t |
| 1979 | 2.1 t | 1998 | 2.85 t | 2017 | 4.13 t |
| 1980 | 2.06 t | 1999 | 2.73 t | 2018 | 3.59 t |
| 1981 | 1.75 t | 2000 | 3.11 t | 2019 | 4.39 t |
| 1982 | 1.55 t | 2001 | 3.13 t | 2020 | 4.25 t |
| 1983 | 1.13 t | 2002 | 2.25 t | 2021 | 4.4 t |
| 1984 | 0.99 t | 2003 | 2.44 t | 2022 | 4.59 t |
| 1985 | 1.27 t | 2004 | 2.71 t | 2023 | 3.97 t |
| 1986 | 1.27 t | 2005 | 3.25 t | 2024 | 4.06 t |
| 1987 | 0.99 t | 2006 | 2.92 t | | |
| 1988 | 1.2 t | 2007 | 2.66 t | | |