You will need to LOGIN to get this information in ENR:
Username: serials@swarthmore.edu
Password: serials1
"ENR publishes both a Construction Cost Index and Building Cost index that are widely used in the construction industry. This website contains an explanation of the indexes methodology and a complete history of the 20-city national average for the CCI and BCI. Both indexes have a materials and labor component. "
There is lots of useful technology data in here. Below I have included two PDFs of indexes to give you an example of the sort of information you could use for this class...
