It looks like you are not actually adding anything, just pulling data?

Try this, copied down and across...
=INDEX(DATA!$B$1:$GF$16,MATCH('Income Statement'!$A8,DATA!$B$1:$B$15,0),MATCH('Income Statement'!F$1,DATA!$B$1:$GF$1,0))

Note: the column and row headings need to be identical for this to work