Besides whatever the data is, starting the graph "Share of personal consumer expenditures" for "technology" from 1977 seems to me a lot like graphing railways s

Besides whatever the data is, starting the graph "Share of personal consumer expenditures" for "technology" from 1977 seems to me a lot like graphing railways starting on 600 BC: https://en.wikipedia.org/wiki/Timeline_of_railway_history https://en.wikipedia.org/wiki/Timeline_of_railway_history If you zoom in on the last ten years, I see substantially constant expenditure for both "technology" and "apparel", with only a slightly increase of technology and a slight decrease of apparel.