Google Books Ngram Viewer

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

1800 - 1905 1906 - 1963 1964 - 1971 1972 - 1991 1992 - 2000 sexual perversion English
1800 - 1954 1955 - 1974 1975 - 1976 1977 - 1989 1990 - 2000 sexual deviation English
1800 - 1938 1939 - 1953 1954 - 1955 1956 - 1996 1997 - 2000 paraphilia English

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