Show data table
| 1970 | 1.6023 Mt | 1989 | 2.4338 Mt | 2008 | 7.0905 Mt |
| 1971 | 1.6115 Mt | 1990 | 2.5946 Mt | 2009 | 6.8985 Mt |
| 1972 | 1.8549 Mt | 1991 | 3.3093 Mt | 2010 | 6.7247 Mt |
| 1973 | 2.0217 Mt | 1992 | 3.7249 Mt | 2011 | 7.0233 Mt |
| 1974 | 2.0585 Mt | 1993 | 4.0457 Mt | 2012 | 6.9977 Mt |
| 1975 | 2.312 Mt | 1994 | 4.6932 Mt | 2013 | 6.635 Mt |
| 1976 | 2.3495 Mt | 1995 | 5.1333 Mt | 2014 | 6.8145 Mt |
| 1977 | 2.4178 Mt | 1996 | 4.5698 Mt | 2015 | 7.2649 Mt |
| 1978 | 2.5788 Mt | 1997 | 5.6022 Mt | 2016 | 7.3283 Mt |
| 1979 | 2.4027 Mt | 1998 | 5.8679 Mt | 2017 | 6.6321 Mt |
| 1980 | 2.0222 Mt | 1999 | 5.8263 Mt | 2018 | 7.1022 Mt |
| 1981 | 2.0175 Mt | 2000 | 5.7988 Mt | 2019 | 8.1068 Mt |
| 1982 | 1.8845 Mt | 2001 | 6.0363 Mt | 2020 | 6.6535 Mt |
| 1983 | 1.9479 Mt | 2002 | 6.0539 Mt | 2021 | 7.532 Mt |
| 1984 | 1.9027 Mt | 2003 | 6.5795 Mt | 2022 | 8.4658 Mt |
| 1985 | 2.0802 Mt | 2004 | 6.8293 Mt | 2023 | 9.2365 Mt |
| 1986 | 2.0631 Mt | 2005 | 7.0326 Mt | 2024 | 9.5434 Mt |
| 1987 | 2.4665 Mt | 2006 | 7.3891 Mt | | |
| 1988 | 2.4399 Mt | 2007 | 7.7786 Mt | | |
Show data table
| 1970 | 0.44 t | 1989 | 0.46 t | 2008 | 1.18 t |
| 1971 | 0.43 t | 1990 | 0.48 t | 2009 | 1.14 t |
| 1972 | 0.48 t | 1991 | 0.6 t | 2010 | 1.11 t |
| 1973 | 0.51 t | 1992 | 0.67 t | 2011 | 1.15 t |
| 1974 | 0.51 t | 1993 | 0.71 t | 2012 | 1.14 t |
| 1975 | 0.56 t | 1994 | 0.82 t | 2013 | 1.08 t |
| 1976 | 0.56 t | 1995 | 0.89 t | 2014 | 1.11 t |
| 1977 | 0.56 t | 1996 | 0.79 t | 2015 | 1.17 t |
| 1978 | 0.59 t | 1997 | 0.96 t | 2016 | 1.18 t |
| 1979 | 0.54 t | 1998 | 1 t | 2017 | 1.07 t |
| 1980 | 0.45 t | 1999 | 0.99 t | 2018 | 1.14 t |
| 1981 | 0.44 t | 2000 | 0.98 t | 2019 | 1.3 t |
| 1982 | 0.41 t | 2001 | 1.01 t | 2020 | 1.07 t |
| 1983 | 0.41 t | 2002 | 1.01 t | 2021 | 1.2 t |
| 1984 | 0.4 t | 2003 | 1.1 t | 2022 | 1.35 t |
| 1985 | 0.42 t | 2004 | 1.14 t | 2023 | 1.46 t |
| 1986 | 0.41 t | 2005 | 1.17 t | 2024 | 1.51 t |
| 1987 | 0.48 t | 2006 | 1.23 t | | |
| 1988 | 0.47 t | 2007 | 1.29 t | | |