| 时间 | 值 （万吨） | 世界排名 |
|---|---|---|
| 2016 | 80840 | |
| 2015 | 80383 | |
| 2014 | 82270 | |
| 2013 | 77904 | |
| 2012 | 71654 | |
| 2011 | 69550 | |
| 2010 | 62665 | |
| 2009 | 57218 | |
| 2008 | 50092 | |
| 2007 | 48929 | |
| 2006 | 41915 | |
| 2005 | 35324 | |
| 2004 | 28291 | |
| 2003 | 22234 | |
| 2002 | 18237 | |
| 2001 | 15163 | |
| 2000 | 12850 | |
| 1999 | 12426 | |
| 1998 | 11559 | |
| 1997 | 10894 | |
| 1996 | 10124 | |
| 1995 | 9536 | |
| 1994 | 9261 | |
| 1993 | 8956 | |
| 1992 | 8094 | |
| 1991 | 7100 | |
| 1990 | 6635 | |
| 1989 | 6159 | |
| 1988 | 5943 | |
| 1987 | 5628 | |
| 1986 | 5220 | |
| 1985 | 4679 | |
| 1984 | 4347 | |
| 1983 | 4002 | |
| 1982 | 3716 | |
| 1981 | 3560 | |
| 1980 | 3712 | |
| 1979 | 3448 | |
| 1978 | 3178 | |
| 1977 | 2374 | |
| 1976 | 2046 | |
| 1975 | 2390 | |
| 1974 | 2112 | |
| 1973 | 2522 | |
| 1972 | 2338 | |
| 1971 | 2132 | |
| 1970 | 1779 | |
| 1969 | 1333 | |
| 1968 | 904 | |
| 1967 | 1029 | |
| 1966 | 1532 | |
| 1965 | 1223 | |
| 1964 | 964 | |
| 1963 | 762 | |
| 1962 | 667 | |
| 1961 | 870 | |
| 1960 | 1866 | |
| 1959 | 1387 | |
| 1958 | 800 | |
| 1957 | 535 | |
| 1956 | 447 | |
| 1955 | 285 | |
| 1954 | 223 | |
| 1953 | 177 | |
| 1952 | 135 | |
| 1951 | 90 | |
| 1950 | 61 | |
| 1949 | 16 |