Show data table
| 1970 | 5.5788 Mt | 1989 | 13.97 Mt | 2008 | 13.21 Mt |
| 1971 | 5.5779 Mt | 1990 | 13.15 Mt | 2009 | 13.93 Mt |
| 1972 | 5.1301 Mt | 1991 | 14.86 Mt | 2010 | 14.91 Mt |
| 1973 | 5.5144 Mt | 1992 | 12.96 Mt | 2011 | 16.24 Mt |
| 1974 | 6.1328 Mt | 1993 | 11.94 Mt | 2012 | 17.66 Mt |
| 1975 | 6.3098 Mt | 1994 | 10.41 Mt | 2013 | 19.18 Mt |
| 1976 | 6.508 Mt | 1995 | 10.34 Mt | 2014 | 19.53 Mt |
| 1977 | 7.4153 Mt | 1996 | 8.7428 Mt | 2015 | 18.03 Mt |
| 1978 | 7.9996 Mt | 1997 | 8.5693 Mt | 2016 | 19.12 Mt |
| 1979 | 8.5073 Mt | 1998 | 8.5963 Mt | 2017 | 21.08 Mt |
| 1980 | 9.3394 Mt | 1999 | 8.6539 Mt | 2018 | 22.96 Mt |
| 1981 | 8.7512 Mt | 2000 | 9.0405 Mt | 2019 | 25.34 Mt |
| 1982 | 9.4339 Mt | 2001 | 9.0123 Mt | 2020 | 22.52 Mt |
| 1983 | 9.682 Mt | 2002 | 9.658 Mt | 2021 | 24.89 Mt |
| 1984 | 10.32 Mt | 2003 | 9.3625 Mt | 2022 | 24.96 Mt |
| 1985 | 11.93 Mt | 2004 | 9.577 Mt | 2023 | 27.15 Mt |
| 1986 | 13.06 Mt | 2005 | 11.13 Mt | 2024 | 27.66 Mt |
| 1987 | 13.87 Mt | 2006 | 12.72 Mt | | |
| 1988 | 14.71 Mt | 2007 | 13.21 Mt | | |
Show data table
| 1970 | 4.31 t | 1989 | 6.58 t | 2008 | 5 t |
| 1971 | 4.19 t | 1990 | 6.26 t | 2009 | 5.18 t |
| 1972 | 3.75 t | 1991 | 6.86 t | 2010 | 5.44 t |
| 1973 | 3.92 t | 1992 | 5.98 t | 2011 | 5.83 t |
| 1974 | 4.24 t | 1993 | 5.51 t | 2012 | 6.22 t |
| 1975 | 4.24 t | 1994 | 4.75 t | 2013 | 6.62 t |
| 1976 | 4.25 t | 1995 | 4.65 t | 2014 | 6.59 t |
| 1977 | 4.7 t | 1996 | 3.87 t | 2015 | 5.96 t |
| 1978 | 4.94 t | 1997 | 3.74 t | 2016 | 6.19 t |
| 1979 | 5.12 t | 1998 | 3.7 t | 2017 | 6.69 t |
| 1980 | 5.49 t | 1999 | 3.67 t | 2018 | 7.16 t |
| 1981 | 5.02 t | 2000 | 3.79 t | 2019 | 7.75 t |
| 1982 | 5.28 t | 2001 | 3.73 t | 2020 | 6.77 t |
| 1983 | 5.29 t | 2002 | 3.94 t | 2021 | 7.36 t |
| 1984 | 5.5 t | 2003 | 3.77 t | 2022 | 7.27 t |
| 1985 | 6.21 t | 2004 | 3.82 t | 2023 | 7.8 t |
| 1986 | 6.63 t | 2005 | 4.39 t | 2024 | 7.85 t |
| 1987 | 6.86 t | 2006 | 4.95 t | | |
| 1988 | 7.08 t | 2007 | 5.08 t | | |