It is a bit after 6:00am, and I have just finished getting some posts together for legal theory blog. There were several papers on originalism posted in just the past few days, and out of curiosity I ran a Google books "N-gram" search on "originalism" and "living constitutionalism" for 1970 to 2016. That didn't work, because "living constitutionalism" produced too few results, so I substituted "living constitution."
Here are the results:
Since the word "originalism" was coined in 1980 by Paul Brest, it is not surprising that "originalism" takes off in the early 1980s. Despite the conventional wisdom that "originalism is dead" in the mid-1980s, the use of the phrase continued to grow until a slight dip in the late 90s, followed by rapid growth after the turn of the century.