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| Commodity | 2005 | 2007 | 2008 |
| Artificial guts (sausage casings) of hardened protein/of cellulosic mats | $932,792 | $2,971,345 | $2,455,329 |
| Tubes, pipes & hoses, rigid, of polymers of ethylene | $2,755,185 | $6,414,776 | $20,015,527 |
| Tubes, pipes & hoses, rigid, of polymers of propylene | $5,417,959 | $6,598,038 | $6,111,003 |
| Tubes, pipes & hoses, rigid, of polymers of vinyl chloride | $9,548,114 | $14,570,544 | $13,526,021 |
| Tubes, pipes & hoses, rigid, of plastics n.e.s. in 39.17 | $12,087,987 | $24,160,580 | $17,289,346 |
| Flexible tubes, pipes & hoses of plastics, having a minimum burst pressure ... | $23,877,578 | $17,944,968 | $73,783,250 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31), not reinf./othw. combi ... | $4,425,864 | $4,499,711 | $7,121,228 |
| Tubes, pipes & hoses of plastics (excl. of 3917.31 & 3917.32), not reinf./o ... | $729,077 | $1,428,438 | $2,133,910 |
| Tubes, pipes & hoses of plastics, n.e.s. (excl. of 3917.21-3917.33) | $12,168,910 | $9,539,655 | $22,328,405 |
| Fittings (e.g., joints, elbows, flanges) for tubes, pipes & hoses, of plast ... | $47,650,659 | $114,312,050 | $143,596,959 |
| Total | $119,594,125 | $202,440,105 | $308,360,978 |
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