If you are looking for data or statistics Google still does a good job but guru Karen Blakeman recommends you also run a search in Zanran http://www.zanran.com/ .
Rather than search the text of web pages it extracts and indexes
numerical data presented as tables, charts and images in PDF reports,
spreadsheets and ordinary web pages. You can simply type in your search
terms but there are additional options for narrowing down the search by
location of the web server, specifying an individual site, selecting a
time period and limiting by file type.
Thank you Karen