Google Books Ngram Viewer

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

1950 - 1953 1954 - 1965 1966 - 1969 1970 - 1993 1994 - 2000 have got English
1950 - 1957 1958 - 1990 1991 - 1993 1994 - 1996 1997 - 2000 have gotten English
1950 - 1953 1954 - 1966 1967 - 1970 1971 - 1992 1993 - 2000 has got English
1950 - 1957 1958 - 1990 1991 - 1994 1995 - 1997 1998 - 2000 has gotten English
1950 - 1952 1953 - 1955 1956 - 1958 1959 - 1989 1990 - 2000 had got English
1950 - 1958 1959 - 1991 1992 - 1994 1995 - 1997 1998 - 2000 had gotten English

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