1) The screenshot below is from Google Books Ngram Viewer for the terms virtual human and virtual humans over a fifty year period, from 1958 to 2008. What can be clearly seen here is that usage of the terms radically escalated from 1990, and began to de-escalate by about 2007.
2) The screenshot below is from Google Trends for worldwide web search of the terms virtual human and virtual humans over a ten year period, from 2009 to 2018. What can be seen here is that the de-escalation of terms from 2007 has continued to this day.
- twitter.com/hashtag/virtualbeing .. #virtualbeing
- twitter.com/hashtag/virtualbeings .. #virtualbeings
- twitter.com/hashtag/virtualhuman .. #virtualhuman
- twitter.com/hashtag/virtualhumans .. #virtualhumans
- Virtual Humans 2018 (83x)
- Virtual Humans 2017 (79x)
- Virtual Humans 2016 (88x)
- Virtual Humans 2015 (91x)
- Virtual Humans 2014 (113x)
- Virtual Humans 2013 (99x)
- Virtual Humans 2012 (91x)
- Virtual Humans 2011 (98x)
- Virtual Humans 2010 (108x)
- Virtual Humans 2009 (117x)