| 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | |
|---|---|---|---|---|---|---|---|
| All shipments | a | a | a | a | a | a | a |
| Domestic shipments | a | a | a | a | a | a | a |
| Transborder shipments | a | a | b | a | b | b | b |
| Local shipments | b | a | b | b | b | b | b |
| Long distance shipments | a | a | a | a | a | a | a |
| The data accuracy measures are for the "weight" variable. "a" is excellent; CV from 0.01% to 4.99% "b" is very good; CV from 5.00% to 9.99% "c" is good; CV from 10.00% to 14.99% "d" is acceptable; CV from 15.00% to 24.99% "e" is use with caution; CV from 25.00% to 49.99% "f" is unreliable; CV is 50.00% or higher |
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| 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | |
|---|---|---|---|---|---|---|---|
| Unweighted response rate | 92% | 92% | 95% | 93% | 93% | 93% | 92% |