Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1997 1998 - 2005 2006 2007 2008 transgender English
1800 - 1975 1976 - 1996 1997 - 1998 1999 - 2004 2005 - 2008 transsexuals English
1800 - 1965 1966 - 1995 1996 - 1998 1999 - 2002 2003 - 2008 transvestites English
1800 - 1997 1998 - 2004 2005 2006 2007 - 2008 transgenders English

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