表を表示
| 1970 | 0.4604 Mt | 1989 | 0.4022 Mt | 2008 | 4.3662 Mt |
| 1971 | 0.3625 Mt | 1990 | 0.3986 Mt | 2009 | 4.6845 Mt |
| 1972 | 0.4625 Mt | 1991 | 0.3505 Mt | 2010 | 5.0815 Mt |
| 1973 | 0.4774 Mt | 1992 | 0.3808 Mt | 2011 | 4.9611 Mt |
| 1974 | 0.4899 Mt | 1993 | 0.3854 Mt | 2012 | 4.7249 Mt |
| 1975 | 0.5496 Mt | 1994 | 0.3921 Mt | 2013 | 4.9707 Mt |
| 1976 | 0.3669 Mt | 1995 | 0.3986 Mt | 2014 | 5.4598 Mt |
| 1977 | 0.4281 Mt | 1996 | 1.0761 Mt | 2015 | 5.8104 Mt |
| 1978 | 0.4551 Mt | 1997 | 1.3648 Mt | 2016 | 7.1473 Mt |
| 1979 | 0.5106 Mt | 1998 | 1.3155 Mt | 2017 | 7.2445 Mt |
| 1980 | 0.5365 Mt | 1999 | 1.4415 Mt | 2018 | 8.251 Mt |
| 1981 | 0.4462 Mt | 2000 | 1.5461 Mt | 2019 | 8.1435 Mt |
| 1982 | 0.5178 Mt | 2001 | 1.8573 Mt | 2020 | 8.7059 Mt |
| 1983 | 0.5109 Mt | 2002 | 2.1429 Mt | 2021 | 6.7467 Mt |
| 1984 | 0.5248 Mt | 2003 | 2.4 Mt | 2022 | 7.0594 Mt |
| 1985 | 0.6179 Mt | 2004 | 2.5584 Mt | 2023 | 6.8922 Mt |
| 1986 | 0.5541 Mt | 2005 | 2.8015 Mt | 2024 | 7.0481 Mt |
| 1987 | 0.5035 Mt | 2006 | 3.8591 Mt | | |
| 1988 | 0.456 Mt | 2007 | 4.3986 Mt | | |
表を表示
| 1970 | 0.15 t | 1989 | 0.08 t | 2008 | 0.47 t |
| 1971 | 0.12 t | 1990 | 0.08 t | 2009 | 0.49 t |
| 1972 | 0.14 t | 1991 | 0.06 t | 2010 | 0.52 t |
| 1973 | 0.15 t | 1992 | 0.07 t | 2011 | 0.49 t |
| 1974 | 0.15 t | 1993 | 0.07 t | 2012 | 0.45 t |
| 1975 | 0.16 t | 1994 | 0.06 t | 2013 | 0.46 t |
| 1976 | 0.1 t | 1995 | 0.06 t | 2014 | 0.49 t |
| 1977 | 0.12 t | 1996 | 0.17 t | 2015 | 0.51 t |
| 1978 | 0.12 t | 1997 | 0.21 t | 2016 | 0.61 t |
| 1979 | 0.13 t | 1998 | 0.19 t | 2017 | 0.6 t |
| 1980 | 0.14 t | 1999 | 0.21 t | 2018 | 0.67 t |
| 1981 | 0.11 t | 2000 | 0.21 t | 2019 | 0.64 t |
| 1982 | 0.12 t | 2001 | 0.25 t | 2020 | 0.67 t |
| 1983 | 0.12 t | 2002 | 0.28 t | 2021 | 0.5 t |
| 1984 | 0.12 t | 2003 | 0.3 t | 2022 | 0.51 t |
| 1985 | 0.14 t | 2004 | 0.31 t | 2023 | 0.49 t |
| 1986 | 0.12 t | 2005 | 0.33 t | 2024 | 0.49 t |
| 1987 | 0.1 t | 2006 | 0.44 t | | |
| 1988 | 0.09 t | 2007 | 0.49 t | | |