Google Books Ngram Viewer

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

1960 - 1978 1979 - 1997 1998 - 2000 2001 - 2004 2005 - 2008 advocate for the child English
1960 - 1977 1978 - 2002 2003 - 2004 2005 - 2006 2007 - 2008 advocate for the rights English
1960 - 1977 1978 - 1996 1997 - 1998 1999 - 2004 2005 - 2008 advocate for the client English
1960 - 1980 1981 - 2000 2001 - 2002 2003 - 2005 2006 - 2008 advocate for the patient English
1960 - 1971 1972 - 1999 2000 - 2002 2003 - 2005 2006 - 2008 advocate for the poor English
1960 - 1962 1963 - 1964 1965 - 1975 1976 - 2006 2007 - 2008 advocate for the defence English
1960 - 1979 1980 - 1996 1997 - 1998 1999 - 2006 2007 - 2008 advocate for the needs English
1960 - 1978 1979 - 2003 2004 - 2005 2006 2007 - 2008 advocate for the use English
1960 - 1975 1976 - 1996 1997 - 1998 1999 - 2006 2007 - 2008 advocate for the interests English
1960 - 1977 1978 - 1983 1984 - 1985 1986 - 2004 2005 - 2008 advocate for the elderly English

Excluding ngrams with part-of-speech tags from search links.

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