table with all estimates of firms profiting

[bkudrzycki]

By each of four models:

• [ ] mean and median net benefits when truncating at different levels
• [ ] percentage of firms with positive (projected) returns
• [ ] mean and median ratio of net benefits for firms that benefit from training on net
• [ ] mean and median ratio of net costs for firm firms that lose from training on net
• [x] MERGE WITH TABLE 6 (sans Endline and repeated footnote)

"and with an explanation of the differences" -> add footnote

[bkudrzycki]

will add a low-priority to-do to include statistics like % of firms profiting (by model, by firm size) into text. table already full.