Sentence:  The other functions which have significant trends (accounting for 93.8 percent of total unified budget outlays at the mean) total 17.6 percent of potential GNP. Measured at the means, there were more dollars involved in downtrends relative  to the economy than in uptrends (due almost entirely to the presence of Function 050 (National defense) among the downward <WSD>trenders</WSD>). 
Meaning of the word marked with <WSD> tags:  Something which trends (has a tendency to go) in a certain way.