Google Books Ngram Viewer

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

1960 - 1963 1964 - 1967 1968 - 1971 1972 - 2002 2003 - 2008 though English
1960 - 1964 1965 - 1994 1995 - 1999 2000 - 2005 2006 - 2008 although English
1960 - 1964 1965 - 1994 1995 - 1999 2000 - 2004 2005 - 2008 obwohl German
1960 - 1962 1963 - 1965 1966 - 1968 1969 - 1997 1998 - 2008 obgleich German
1960 - 1965 1966 - 1995 1996 - 1999 2000 - 2003 2004 - 2008 хотя Russian
1960 - 1963 1964 - 1967 1968 - 1971 1972 - 2001 2002 - 2008 bien que French
1960 - 1964 1965 - 1994 1995 - 1999 2000 - 2004 2005 - 2008 aunque Spanish
1960 - 1964 1965 - 1995 1996 - 1999 2000 - 2003 2004 - 2008 尽管 Chinese

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