Show data table
| 1970 | 27.48 Mt | 1989 | 56.63 Mt | 2008 | 216.13 Mt |
| 1971 | 27.88 Mt | 1990 | 64.42 Mt | 2009 | 197.91 Mt |
| 1972 | 14.92 Mt | 1991 | 75.31 Mt | 2010 | 215.5 Mt |
| 1973 | 15.41 Mt | 1992 | 79.29 Mt | 2011 | 218.27 Mt |
| 1974 | 18.45 Mt | 1993 | 79.5 Mt | 2012 | 219.8 Mt |
| 1975 | 19.84 Mt | 1994 | 87.57 Mt | 2013 | 237.16 Mt |
| 1976 | 21.84 Mt | 1995 | 90.94 Mt | 2014 | 251.39 Mt |
| 1977 | 21.48 Mt | 1996 | 103.43 Mt | 2015 | 252.86 Mt |
| 1978 | 27.56 Mt | 1997 | 113.25 Mt | 2016 | 247.48 Mt |
| 1979 | 31.58 Mt | 1998 | 110.65 Mt | 2017 | 237.83 Mt |
| 1980 | 32.77 Mt | 1999 | 119.68 Mt | 2018 | 254.28 Mt |
| 1981 | 33.47 Mt | 2000 | 130.76 Mt | 2019 | 255.17 Mt |
| 1982 | 36.17 Mt | 2001 | 138.41 Mt | 2020 | 253.08 Mt |
| 1983 | 41.03 Mt | 2002 | 146.55 Mt | 2021 | 257.92 Mt |
| 1984 | 43.16 Mt | 2003 | 156.55 Mt | 2022 | 276.98 Mt |
| 1985 | 42.72 Mt | 2004 | 169.59 Mt | 2023 | 282.38 Mt |
| 1986 | 43.96 Mt | 2005 | 181.12 Mt | 2024 | 295.95 Mt |
| 1987 | 44.8 Mt | 2006 | 187.73 Mt | | |
| 1988 | 47.91 Mt | 2007 | 204.88 Mt | | |
Show data table
| 1970 | 2.7 t | 1989 | 3.27 t | 2008 | 7.84 t |
| 1971 | 2.67 t | 1990 | 3.61 t | 2009 | 7.04 t |
| 1972 | 1.4 t | 1991 | 4.11 t | 2010 | 7.52 t |
| 1973 | 1.41 t | 1992 | 4.21 t | 2011 | 7.48 t |
| 1974 | 1.65 t | 1993 | 4.11 t | 2012 | 7.41 t |
| 1975 | 1.73 t | 1994 | 4.42 t | 2013 | 7.86 t |
| 1976 | 1.86 t | 1995 | 4.47 t | 2014 | 8.19 t |
| 1977 | 1.78 t | 1996 | 4.96 t | 2015 | 8.1 t |
| 1978 | 2.24 t | 1997 | 5.3 t | 2016 | 7.79 t |
| 1979 | 2.5 t | 1998 | 5.05 t | 2017 | 7.35 t |
| 1980 | 2.52 t | 1999 | 5.33 t | 2018 | 7.73 t |
| 1981 | 2.5 t | 2000 | 5.69 t | 2019 | 7.63 t |
| 1982 | 2.61 t | 2001 | 5.88 t | 2020 | 7.47 t |
| 1983 | 2.87 t | 2002 | 6.08 t | 2021 | 7.52 t |
| 1984 | 2.92 t | 2003 | 6.34 t | 2022 | 7.98 t |
| 1985 | 2.8 t | 2004 | 6.71 t | 2023 | 8.04 t |
| 1986 | 2.79 t | 2005 | 7.01 t | 2024 | 8.32 t |
| 1987 | 2.75 t | 2006 | 7.11 t | | |
| 1988 | 2.85 t | 2007 | 7.59 t | | |