Google Books Ngram Viewer

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

1800 - 1982 1983 - 1997 1998 1999 2000 drogengebraucher German
1800 - 1975 1976 - 1988 1989 1990 - 1996 1997 - 2000 drogensüchtiger German
1800 - 1974 1975 - 1990 1991 - 1992 1993 - 1997 1998 - 2000 drogenabhängiger German
1800 - 1938 1939 - 1976 1977 - 1978 1979 - 1986 1987 - 2000 rauschgiftsüchtiger German

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