表を表示
| 1970 | 1.58万 Mt | 1989 | 2.23万 Mt | 2008 | 3.24万 Mt |
| 1971 | 1.57万 Mt | 1990 | 2.27万 Mt | 2009 | 3.2万 Mt |
| 1972 | 1.65万 Mt | 1991 | 2.28万 Mt | 2010 | 3.4万 Mt |
| 1973 | 1.75万 Mt | 1992 | 2.27万 Mt | 2011 | 3.5万 Mt |
| 1974 | 1.74万 Mt | 1993 | 2.28万 Mt | 2012 | 3.55万 Mt |
| 1975 | 1.73万 Mt | 1994 | 2.3万 Mt | 2013 | 3.62万 Mt |
| 1976 | 1.83万 Mt | 1995 | 2.37万 Mt | 2014 | 3.64万 Mt |
| 1977 | 1.89万 Mt | 1996 | 2.41万 Mt | 2015 | 3.63万 Mt |
| 1978 | 1.95万 Mt | 1997 | 2.46万 Mt | 2016 | 3.64万 Mt |
| 1979 | 2万 Mt | 1998 | 2.48万 Mt | 2017 | 3.7万 Mt |
| 1980 | 1.98万 Mt | 1999 | 2.49万 Mt | 2018 | 3.79万 Mt |
| 1981 | 1.94万 Mt | 2000 | 2.57万 Mt | 2019 | 3.8万 Mt |
| 1982 | 1.92万 Mt | 2001 | 2.6万 Mt | 2020 | 3.62万 Mt |
| 1983 | 1.93万 Mt | 2002 | 2.64万 Mt | 2021 | 3.82万 Mt |
| 1984 | 1.99万 Mt | 2003 | 2.76万 Mt | 2022 | 3.85万 Mt |
| 1985 | 2.02万 Mt | 2004 | 2.89万 Mt | 2023 | 3.91万 Mt |
| 1986 | 2.05万 Mt | 2005 | 3万 Mt | 2024 | 3.96万 Mt |
| 1987 | 2.12万 Mt | 2006 | 3.1万 Mt | | |
| 1988 | 2.2万 Mt | 2007 | 3.22万 Mt | | |
表を表示
| 1970 | 4.14 t | 1989 | 4.16 t | 2008 | 4.56 t |
| 1971 | 4.04 t | 1990 | 4.15 t | 2009 | 4.45 t |
| 1972 | 4.16 t | 1991 | 4.1 t | 2010 | 4.67 t |
| 1973 | 4.32 t | 1992 | 4.01 t | 2011 | 4.76 t |
| 1974 | 4.23 t | 1993 | 3.97 t | 2012 | 4.77 t |
| 1975 | 4.14 t | 1994 | 3.94 t | 2013 | 4.81 t |
| 1976 | 4.31 t | 1995 | 3.99 t | 2014 | 4.78 t |
| 1977 | 4.36 t | 1996 | 4.01 t | 2015 | 4.7 t |
| 1978 | 4.42 t | 1997 | 4.02 t | 2016 | 4.65 t |
| 1979 | 4.46 t | 1998 | 3.98 t | 2017 | 4.67 t |
| 1980 | 4.33 t | 1999 | 3.95 t | 2018 | 4.73 t |
| 1981 | 4.18 t | 2000 | 4.01 t | 2019 | 4.7 t |
| 1982 | 4.05 t | 2001 | 4.01 t | 2020 | 4.47 t |
| 1983 | 4.01 t | 2002 | 4.01 t | 2021 | 4.68 t |
| 1984 | 4.07 t | 2003 | 4.15 t | 2022 | 4.67 t |
| 1985 | 4.05 t | 2004 | 4.28 t | 2023 | 4.68 t |
| 1986 | 4.04 t | 2005 | 4.39 t | 2024 | 4.69 t |
| 1987 | 4.1 t | 2006 | 4.48 t | | |
| 1988 | 4.16 t | 2007 | 4.59 t | | |