Google Books Ngram Viewer

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

1995 - 1997 1998 - 2004 2005 2006 2007 - 2008 snail mail English
1995 - 1996 1997 - 2004 2005 2006 2007 - 2008 postal mail English
1995 - 1996 1997 - 2003 2004 2005 2006 - 2008 regular mail English
1995 1996 - 1999 2000 2001 - 2007 2008 surface mail English
1995 1996 - 2001 2002 2003 - 2006 2007 - 2008 air mail English
1995 1996 - 2001 2002 2003 - 2004 2005 - 2008 paper mail English
1995 - 1997 1998 - 2004 2005 2006 2007 - 2008 physical mail English

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