表を表示
| 1970 | 0.0658 Mt | 1989 | 0.1186 Mt | 2008 | 0.2442 Mt |
| 1971 | 0.0658 Mt | 1990 | 0.1228 Mt | 2009 | 0.2482 Mt |
| 1972 | 0.0702 Mt | 1991 | 0.1273 Mt | 2010 | 0.2631 Mt |
| 1973 | 0.0844 Mt | 1992 | 0.1243 Mt | 2011 | 0.2677 Mt |
| 1974 | 0.1036 Mt | 1993 | 0.1413 Mt | 2012 | 0.2681 Mt |
| 1975 | 0.0856 Mt | 1994 | 0.1452 Mt | 2013 | 0.2788 Mt |
| 1976 | 0.0843 Mt | 1995 | 0.1318 Mt | 2014 | 0.2865 Mt |
| 1977 | 0.089 Mt | 1996 | 0.133 Mt | 2015 | 0.3288 Mt |
| 1978 | 0.0883 Mt | 1997 | 0.137 Mt | 2016 | 0.3542 Mt |
| 1979 | 0.0949 Mt | 1998 | 0.1409 Mt | 2017 | 0.3165 Mt |
| 1980 | 0.1022 Mt | 1999 | 0.1407 Mt | 2018 | 0.3447 Mt |
| 1981 | 0.1011 Mt | 2000 | 0.186 Mt | 2019 | 0.3735 Mt |
| 1982 | 0.1138 Mt | 2001 | 0.2009 Mt | 2020 | 0.3132 Mt |
| 1983 | 0.1124 Mt | 2002 | 0.2076 Mt | 2021 | 0.3435 Mt |
| 1984 | 0.1253 Mt | 2003 | 0.2143 Mt | 2022 | 0.3324 Mt |
| 1985 | 0.1107 Mt | 2004 | 0.2106 Mt | 2023 | 0.3333 Mt |
| 1986 | 0.0836 Mt | 2005 | 0.2178 Mt | 2024 | 0.3498 Mt |
| 1987 | 0.0952 Mt | 2006 | 0.2187 Mt | | |
| 1988 | 0.0959 Mt | 2007 | 0.2381 Mt | | |
表を表示
| 1970 | 0.47 t | 1989 | 0.7 t | 2008 | 1.28 t |
| 1971 | 0.46 t | 1990 | 0.73 t | 2009 | 1.3 t |
| 1972 | 0.49 t | 1991 | 0.75 t | 2010 | 1.36 t |
| 1973 | 0.58 t | 1992 | 0.73 t | 2011 | 1.37 t |
| 1974 | 0.69 t | 1993 | 0.82 t | 2012 | 1.36 t |
| 1975 | 0.56 t | 1994 | 0.84 t | 2013 | 1.41 t |
| 1976 | 0.54 t | 1995 | 0.75 t | 2014 | 1.43 t |
| 1977 | 0.56 t | 1996 | 0.76 t | 2015 | 1.63 t |
| 1978 | 0.55 t | 1997 | 0.77 t | 2016 | 1.74 t |
| 1979 | 0.58 t | 1998 | 0.79 t | 2017 | 1.54 t |
| 1980 | 0.62 t | 1999 | 0.78 t | 2018 | 1.66 t |
| 1981 | 0.61 t | 2000 | 1.02 t | 2019 | 1.78 t |
| 1982 | 0.68 t | 2001 | 1.1 t | 2020 | 1.48 t |
| 1983 | 0.67 t | 2002 | 1.13 t | 2021 | 1.61 t |
| 1984 | 0.75 t | 2003 | 1.16 t | 2022 | 1.54 t |
| 1985 | 0.66 t | 2004 | 1.13 t | 2023 | 1.54 t |
| 1986 | 0.5 t | 2005 | 1.16 t | 2024 | 1.6 t |
| 1987 | 0.57 t | 2006 | 1.17 t | | |
| 1988 | 0.57 t | 2007 | 1.26 t | | |