Google Books Ngram Viewer

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

1800 - 1953 1954 - 1992 1993 - 1994 1995 - 1997 1998 - 2000 need for parents to be English
1800 - 1943 1944 - 1994 1995 1996 - 1999 2000 need for parents to have English
1800 - 1950 1951 - 1955 1956 1957 - 1993 1994 - 2000 need for parents to understand English
1800 - 1948 1949 - 1953 1954 1955 - 1995 1996 - 1998 need for parents to take English
1800 - 1918 1919 1920 - 1974 1975 - 1985 1986 - 1997 need for parents to give English
1800 - 1936 1937 - 1950 1951 1952 - 1990 1991 - 1996 need for parents to become English
1800 - 1951 1952 - 1959 1960 1961 - 1997 1998 - 2000 need for parents to make English
1800 - 1972 1973 - 1989 1990 1991 - 1996 1997 - 2000 need for parents to help English
1800 - 1928 1929 - 1994 1995 1996 - 1999 2000 need for parents to work English
1800 - 1965 1966 - 1986 1987 1988 - 1996 1997 - 2000 need for parents to provide English
1800 - 1934 1935 - 1953 1954 1955 - 1980 1981 - 2000 need for him to attend English
1800 - 1937 1938 - 1942 1943 1944 - 1994 1995 - 2000 need for you to attend English
1800 - 1937 1938 - 1987 1988 - 1992 1993 - 1995 1996 - 2000 need for them to attend English
1800 - 1940 1941 - 1950 1951 1952 - 1988 1989 - 1997 need for me to attend English
1800 - 1904 1905 - 1930 1931 1932 - 2000 2001 - 2000 need for maud to attend English
1800 - 1917 1918 - 1992 1993 - 1994 1995 - 1997 1998 - 2000 need for her to attend English

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