Show data table
| 1970 | 848.73 Mt | 1989 | 1,090 Mt | 2008 | 1,221 Mt |
| 1971 | 846.43 Mt | 1990 | 1,162 Mt | 2009 | 1,157 Mt |
| 1972 | 892.98 Mt | 1991 | 1,172 Mt | 2010 | 1,217 Mt |
| 1973 | 1,007 Mt | 1992 | 1,177 Mt | 2011 | 1,270 Mt |
| 1974 | 1,003 Mt | 1993 | 1,170 Mt | 2012 | 1,308 Mt |
| 1975 | 948.66 Mt | 1994 | 1,223 Mt | 2013 | 1,323 Mt |
| 1976 | 980.71 Mt | 1995 | 1,233 Mt | 2014 | 1,274 Mt |
| 1977 | 1,006 Mt | 1996 | 1,246 Mt | 2015 | 1,233 Mt |
| 1978 | 1,006 Mt | 1997 | 1,232 Mt | 2016 | 1,229 Mt |
| 1979 | 1,030 Mt | 1998 | 1,184 Mt | 2017 | 1,213 Mt |
| 1980 | 1,003 Mt | 1999 | 1,225 Mt | 2018 | 1,163 Mt |
| 1981 | 981.56 Mt | 2000 | 1,244 Mt | 2019 | 1,124 Mt |
| 1982 | 939.74 Mt | 2001 | 1,230 Mt | 2020 | 1,060 Mt |
| 1983 | 943.22 Mt | 2002 | 1,265 Mt | 2021 | 1,080 Mt |
| 1984 | 1,011 Mt | 2003 | 1,272 Mt | 2022 | 1,051 Mt |
| 1985 | 983.43 Mt | 2004 | 1,267 Mt | 2023 | 1,002 Mt |
| 1986 | 980.46 Mt | 2005 | 1,279 Mt | 2024 | 972.27 Mt |
| 1987 | 987.76 Mt | 2006 | 1,256 Mt | | |
| 1988 | 1,061 Mt | 2007 | 1,292 Mt | | |
Show data table
| 1970 | 8.21 t | 1989 | 8.86 t | 2008 | 9.53 t |
| 1971 | 8.01 t | 1990 | 9.41 t | 2009 | 9.04 t |
| 1972 | 8.33 t | 1991 | 9.45 t | 2010 | 9.5 t |
| 1973 | 9.26 t | 1992 | 9.46 t | 2011 | 9.93 t |
| 1974 | 9.11 t | 1993 | 9.37 t | 2012 | 10.25 t |
| 1975 | 8.5 t | 1994 | 9.77 t | 2013 | 10.38 t |
| 1976 | 8.7 t | 1995 | 9.83 t | 2014 | 10.01 t |
| 1977 | 8.83 t | 1996 | 9.91 t | 2015 | 9.69 t |
| 1978 | 8.76 t | 1997 | 9.77 t | 2016 | 9.67 t |
| 1979 | 8.89 t | 1998 | 9.37 t | 2017 | 9.55 t |
| 1980 | 8.59 t | 1999 | 9.68 t | 2018 | 9.17 t |
| 1981 | 8.34 t | 2000 | 9.8 t | 2019 | 8.87 t |
| 1982 | 7.93 t | 2001 | 9.67 t | 2020 | 8.4 t |
| 1983 | 7.91 t | 2002 | 9.92 t | 2021 | 8.59 t |
| 1984 | 8.42 t | 2003 | 9.96 t | 2022 | 8.4 t |
| 1985 | 8.14 t | 2004 | 9.92 t | 2023 | 8.05 t |
| 1986 | 8.07 t | 2005 | 10.01 t | 2024 | 7.84 t |
| 1987 | 8.09 t | 2006 | 9.82 t | | |
| 1988 | 8.65 t | 2007 | 10.09 t | | |