Google Books Ngram Viewer

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

1950 - 1962 1963 - 1973 1974 1975 - 1991 1992 - 2000 drug party English
1950 - 1970 1971 - 1989 1990 1991 - 1997 1998 - 2000 drugs party English

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