Show data table
| 1970 | 25.46 Mt | 1989 | 88.58 Mt | 2008 | 202.03 Mt |
| 1971 | 25.16 Mt | 1990 | 91.51 Mt | 2009 | 210.34 Mt |
| 1972 | 27.35 Mt | 1991 | 93.68 Mt | 2010 | 211.76 Mt |
| 1973 | 25.46 Mt | 1992 | 97.45 Mt | 2011 | 219.34 Mt |
| 1974 | 29.43 Mt | 1993 | 97.79 Mt | 2012 | 232.96 Mt |
| 1975 | 31.73 Mt | 1994 | 93.23 Mt | 2013 | 228.75 Mt |
| 1976 | 36.68 Mt | 1995 | 99.73 Mt | 2014 | 233.11 Mt |
| 1977 | 37.84 Mt | 1996 | 106.92 Mt | 2015 | 239.41 Mt |
| 1978 | 38.32 Mt | 1997 | 113.78 Mt | 2016 | 250.12 Mt |
| 1979 | 41.62 Mt | 1998 | 120.13 Mt | 2017 | 261.71 Mt |
| 1980 | 45.71 Mt | 1999 | 129.41 Mt | 2018 | 256.22 Mt |
| 1981 | 51.67 Mt | 2000 | 127.92 Mt | 2019 | 237.03 Mt |
| 1982 | 55.83 Mt | 2001 | 141.2 Mt | 2020 | 246.18 Mt |
| 1983 | 62.17 Mt | 2002 | 144.96 Mt | 2021 | 261.63 Mt |
| 1984 | 68.45 Mt | 2003 | 147.86 Mt | 2022 | 258.99 Mt |
| 1985 | 71.83 Mt | 2004 | 160.42 Mt | 2023 | 275.84 Mt |
| 1986 | 74.99 Mt | 2005 | 178.39 Mt | 2024 | 291.64 Mt |
| 1987 | 81.27 Mt | 2006 | 188.88 Mt | | |
| 1988 | 83.43 Mt | 2007 | 201.96 Mt | | |
Show data table
| 1970 | 0.74 t | 1989 | 1.56 t | 2008 | 2.35 t |
| 1971 | 0.71 t | 1990 | 1.57 t | 2009 | 2.4 t |
| 1972 | 0.75 t | 1991 | 1.56 t | 2010 | 2.37 t |
| 1973 | 0.69 t | 1992 | 1.59 t | 2011 | 2.41 t |
| 1974 | 0.78 t | 1993 | 1.55 t | 2012 | 2.5 t |
| 1975 | 0.82 t | 1994 | 1.45 t | 2013 | 2.4 t |
| 1976 | 0.92 t | 1995 | 1.52 t | 2014 | 2.39 t |
| 1977 | 0.93 t | 1996 | 1.6 t | 2015 | 2.4 t |
| 1978 | 0.92 t | 1997 | 1.66 t | 2016 | 2.46 t |
| 1979 | 0.97 t | 1998 | 1.72 t | 2017 | 2.52 t |
| 1980 | 1.04 t | 1999 | 1.81 t | 2018 | 2.42 t |
| 1981 | 1.14 t | 2000 | 1.75 t | 2019 | 2.2 t |
| 1982 | 1.2 t | 2001 | 1.89 t | 2020 | 2.25 t |
| 1983 | 1.3 t | 2002 | 1.9 t | 2021 | 2.36 t |
| 1984 | 1.39 t | 2003 | 1.9 t | 2022 | 2.3 t |
| 1985 | 1.42 t | 2004 | 2.02 t | 2023 | 2.41 t |
| 1986 | 1.44 t | 2005 | 2.2 t | 2024 | 2.5 t |
| 1987 | 1.51 t | 2006 | 2.28 t | | |
| 1988 | 1.51 t | 2007 | 2.4 t | | |