| 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| All shipments | a | a | a | a | a | a | a | a | a | a | a |
| Domestic shipments | a | b | a | a | a | a | a | a | a | a | a |
| Transborder shipments | b | b | b | a | b | a | a | b | a | b | b |
| Local shipments | b | b | b | b | b | b | a | b | b | b | b |
| Long distance shipments | a | b | a | a | 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
| 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Unweighted response rate | 94% | 92% | 92% | 93% | 92% | 92% | 92% | 95% | 93% | 93% | 93% |