Google Books Ngram Viewer

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

1800 - 1944 1945 - 1956 1957 - 1959 1960 - 1984 1985 - 2000 double talk English
1800 - 1948 1949 - 1964 1965 - 1968 1969 - 1990 1991 - 2000 doubletalk English

Run your own experiment! Raw data is available for download here.
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