Show data table
| 1970 | 18.76 Mt | 1989 | 38.92 Mt | 2008 | 61.94 Mt |
| 1971 | 18.78 Mt | 1990 | 45.69 Mt | 2009 | 54.63 Mt |
| 1972 | 19.74 Mt | 1991 | 38.73 Mt | 2010 | 61.65 Mt |
| 1973 | 20.62 Mt | 1992 | 28.61 Mt | 2011 | 66.14 Mt |
| 1974 | 21.62 Mt | 1993 | 27.15 Mt | 2012 | 68.3 Mt |
| 1975 | 23.61 Mt | 1994 | 34.24 Mt | 2013 | 65.27 Mt |
| 1976 | 24.19 Mt | 1995 | 34.66 Mt | 2014 | 63.22 Mt |
| 1977 | 25.05 Mt | 1996 | 31.52 Mt | 2015 | 67.91 Mt |
| 1978 | 26.81 Mt | 1997 | 31.5 Mt | 2016 | 67.29 Mt |
| 1979 | 27.71 Mt | 1998 | 32.61 Mt | 2017 | 72.17 Mt |
| 1980 | 29.73 Mt | 1999 | 38.56 Mt | 2018 | 74.23 Mt |
| 1981 | 30.68 Mt | 2000 | 39.34 Mt | 2019 | 73.25 Mt |
| 1982 | 31.53 Mt | 2001 | 40.29 Mt | 2020 | 76.83 Mt |
| 1983 | 32.48 Mt | 2002 | 43.22 Mt | 2021 | 95.43 Mt |
| 1984 | 33.64 Mt | 2003 | 48.15 Mt | 2022 | 101.26 Mt |
| 1985 | 34.81 Mt | 2004 | 51.32 Mt | 2023 | 94.73 Mt |
| 1986 | 36.04 Mt | 2005 | 52.9 Mt | 2024 | 81.41 Mt |
| 1987 | 37.17 Mt | 2006 | 54.96 Mt | | |
| 1988 | 38.1 Mt | 2007 | 60.79 Mt | | |
Show data table
| 1970 | 8.54 t | 1989 | 10.63 t | 2008 | 11.59 t |
| 1971 | 8.34 t | 1990 | 12.15 t | 2009 | 10.02 t |
| 1972 | 8.54 t | 1991 | 10.05 t | 2010 | 11.08 t |
| 1973 | 8.7 t | 1992 | 7.25 t | 2011 | 11.64 t |
| 1974 | 8.89 t | 1993 | 6.73 t | 2012 | 11.76 t |
| 1975 | 9.47 t | 1994 | 8.32 t | 2013 | 10.99 t |
| 1976 | 9.46 t | 1995 | 8.27 t | 2014 | 10.41 t |
| 1977 | 9.55 t | 1996 | 7.39 t | 2015 | 10.93 t |
| 1978 | 9.96 t | 1997 | 7.26 t | 2016 | 10.58 t |
| 1979 | 10.04 t | 1998 | 7.39 t | 2017 | 11.09 t |
| 1980 | 10.5 t | 1999 | 8.58 t | 2018 | 11.15 t |
| 1981 | 10.55 t | 2000 | 8.58 t | 2019 | 10.77 t |
| 1982 | 10.56 t | 2001 | 8.62 t | 2020 | 11.05 t |
| 1983 | 10.59 t | 2002 | 9.06 t | 2021 | 13.46 t |
| 1984 | 10.67 t | 2003 | 9.9 t | 2022 | 14.01 t |
| 1985 | 10.72 t | 2004 | 10.35 t | 2023 | 12.86 t |
| 1986 | 10.77 t | 2005 | 10.47 t | 2024 | 10.86 t |
| 1987 | 10.77 t | 2006 | 10.68 t | | |
| 1988 | 10.7 t | 2007 | 11.59 t | | |