Figure 7. CES data collection methods, 1915–2015 (percent of CES collection)
Collection method 1915 1993 2004 2011 2015

Mail

100 86 3 0 0

CATI

0 4 20 18 31

TDE

0 8 27 4 3

EDI

0 0 30 45 42

Fax

0 0 14 5 4

Web

0 0 1 25 16

Other

0 2 5 3 4

Source: U.S. Bureau of Labor Statistics.