|
| Commodity | 2005 | 2006 | 2007 | 2010 | 2011 |
| Roller chain of iron/steel | | $2,017 | | | |
| Articulated link chain other than roller chain, of iron/steel | | | | | $501 |
| Parts of articulated link chain of iron/steel | $2,693 | | | | |
| Skid chain of iron/steel | | $321 | | | |
| Welded link chain of iron/steel | | | $7,981 | | |
| Parts of chains (excl. articulated link chain), of iron/steel | $90 | | | $26,280 | $81,129 |
| Total | $2,783 | $2,338 | $7,981 | $26,280 | $81,630 |
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