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 - 1999 2000 - 2001 2002 - 2003 2004 - 2008 exchange rate regime English
1800 - 1976 1977 - 1993 1994 - 1995 1996 - 2001 2002 - 2008 exchange rate policy English
1800 - 1972 1973 - 1993 1994 - 1995 1996 - 2002 2003 - 2008 exchange rate system English

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