Show data table
| 1970 | 142.84 Mt | 1989 | 224.91 Mt | 2008 | 340.12 Mt |
| 1971 | 139.4 Mt | 1990 | 229.47 Mt | 2009 | 300.4 Mt |
| 1972 | 151.7 Mt | 1991 | 237.45 Mt | 2010 | 287.75 Mt |
| 1973 | 164.53 Mt | 1992 | 245.48 Mt | 2011 | 289.52 Mt |
| 1974 | 176.9 Mt | 1993 | 231.11 Mt | 2012 | 284.97 Mt |
| 1975 | 182.7 Mt | 1994 | 242.17 Mt | 2013 | 256.36 Mt |
| 1976 | 200.85 Mt | 1995 | 255.05 Mt | 2014 | 255.24 Mt |
| 1977 | 192.73 Mt | 1996 | 244.8 Mt | 2015 | 271.54 Mt |
| 1978 | 191.5 Mt | 1997 | 263.99 Mt | 2016 | 263.05 Mt |
| 1979 | 203.18 Mt | 1998 | 272.61 Mt | 2017 | 278.38 Mt |
| 1980 | 212.89 Mt | 1999 | 294.72 Mt | 2018 | 271.79 Mt |
| 1981 | 218.52 Mt | 2000 | 310.33 Mt | 2019 | 254.35 Mt |
| 1982 | 212.03 Mt | 2001 | 310.54 Mt | 2020 | 214.45 Mt |
| 1983 | 215.14 Mt | 2002 | 328.59 Mt | 2021 | 233.19 Mt |
| 1984 | 204.23 Mt | 2003 | 335.97 Mt | 2022 | 238.65 Mt |
| 1985 | 197.46 Mt | 2004 | 352.5 Mt | 2023 | 220.99 Mt |
| 1986 | 201.3 Mt | 2005 | 367.83 Mt | 2024 | 220.08 Mt |
| 1987 | 202.47 Mt | 2006 | 358.33 Mt | | |
| 1988 | 206.62 Mt | 2007 | 371.51 Mt | | |
Show data table
| 1970 | 4.22 t | 1989 | 5.79 t | 2008 | 7.4 t |
| 1971 | 4.07 t | 1990 | 5.9 t | 2009 | 6.48 t |
| 1972 | 4.38 t | 1991 | 6.09 t | 2010 | 6.18 t |
| 1973 | 4.7 t | 1992 | 6.27 t | 2011 | 6.19 t |
| 1974 | 5 t | 1993 | 5.87 t | 2012 | 6.09 t |
| 1975 | 5.11 t | 1994 | 6.12 t | 2013 | 5.5 t |
| 1976 | 5.56 t | 1995 | 6.42 t | 2014 | 5.49 t |
| 1977 | 5.28 t | 1996 | 6.14 t | 2015 | 5.85 t |
| 1978 | 5.19 t | 1997 | 6.59 t | 2016 | 5.66 t |
| 1979 | 5.46 t | 1998 | 6.78 t | 2017 | 5.98 t |
| 1980 | 5.68 t | 1999 | 7.3 t | 2018 | 5.81 t |
| 1981 | 5.79 t | 2000 | 7.65 t | 2019 | 5.4 t |
| 1982 | 5.58 t | 2001 | 7.6 t | 2020 | 4.53 t |
| 1983 | 5.64 t | 2002 | 7.93 t | 2021 | 4.92 t |
| 1984 | 5.33 t | 2003 | 7.96 t | 2022 | 4.99 t |
| 1985 | 5.13 t | 2004 | 8.21 t | 2023 | 4.57 t |
| 1986 | 5.22 t | 2005 | 8.43 t | 2024 | 4.51 t |
| 1987 | 5.23 t | 2006 | 8.07 t | | |
| 1988 | 5.33 t | 2007 | 8.21 t | | |