表を表示
| 1970 | 0.3603 Mt | 1989 | 0.5961 Mt | 2008 | 0.7921 Mt |
| 1971 | 0.3595 Mt | 1990 | 0.6158 Mt | 2009 | 0.7987 Mt |
| 1972 | 0.4127 Mt | 1991 | 0.5866 Mt | 2010 | 0.8204 Mt |
| 1973 | 0.4086 Mt | 1992 | 0.5704 Mt | 2011 | 0.6789 Mt |
| 1974 | 0.3754 Mt | 1993 | 0.5429 Mt | 2012 | 0.6436 Mt |
| 1975 | 0.4306 Mt | 1994 | 0.5292 Mt | 2013 | 0.7307 Mt |
| 1976 | 0.4085 Mt | 1995 | 0.5412 Mt | 2014 | 0.667 Mt |
| 1977 | 0.4368 Mt | 1996 | 0.5287 Mt | 2015 | 0.7195 Mt |
| 1978 | 0.4459 Mt | 1997 | 0.6283 Mt | 2016 | 0.7728 Mt |
| 1979 | 0.446 Mt | 1998 | 0.6907 Mt | 2017 | 0.6819 Mt |
| 1980 | 0.4449 Mt | 1999 | 0.7235 Mt | 2018 | 0.7782 Mt |
| 1981 | 0.4418 Mt | 2000 | 0.588 Mt | 2019 | 0.8686 Mt |
| 1982 | 0.4258 Mt | 2001 | 0.5649 Mt | 2020 | 0.6726 Mt |
| 1983 | 0.4404 Mt | 2002 | 0.6061 Mt | 2021 | 0.6515 Mt |
| 1984 | 0.4103 Mt | 2003 | 0.6372 Mt | 2022 | 0.6889 Mt |
| 1985 | 0.4992 Mt | 2004 | 0.6307 Mt | 2023 | 0.6906 Mt |
| 1986 | 0.5395 Mt | 2005 | 0.6457 Mt | 2024 | 0.7128 Mt |
| 1987 | 0.5103 Mt | 2006 | 0.6979 Mt | | |
| 1988 | 0.5233 Mt | 2007 | 0.6716 Mt | | |
表を表示
| 1970 | 1.44 t | 1989 | 2.31 t | 2008 | 2.9 t |
| 1971 | 1.44 t | 1990 | 2.38 t | 2009 | 2.91 t |
| 1972 | 1.65 t | 1991 | 2.26 t | 2010 | 2.98 t |
| 1973 | 1.63 t | 1992 | 2.19 t | 2011 | 2.46 t |
| 1974 | 1.5 t | 1993 | 2.08 t | 2012 | 2.32 t |
| 1975 | 1.71 t | 1994 | 2.02 t | 2013 | 2.63 t |
| 1976 | 1.62 t | 1995 | 2.07 t | 2014 | 2.4 t |
| 1977 | 1.74 t | 1996 | 2.02 t | 2015 | 2.58 t |
| 1978 | 1.77 t | 1997 | 2.39 t | 2016 | 2.76 t |
| 1979 | 1.77 t | 1998 | 2.63 t | 2017 | 2.43 t |
| 1980 | 1.77 t | 1999 | 2.76 t | 2018 | 2.77 t |
| 1981 | 1.75 t | 2000 | 2.24 t | 2019 | 3.09 t |
| 1982 | 1.68 t | 2001 | 2.15 t | 2020 | 2.39 t |
| 1983 | 1.73 t | 2002 | 2.29 t | 2021 | 2.31 t |
| 1984 | 1.61 t | 2003 | 2.4 t | 2022 | 2.44 t |
| 1985 | 1.95 t | 2004 | 2.36 t | 2023 | 2.45 t |
| 1986 | 2.1 t | 2005 | 2.4 t | 2024 | 2.52 t |
| 1987 | 1.98 t | 2006 | 2.58 t | | |
| 1988 | 2.03 t | 2007 | 2.48 t | | |