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Academic Commons
1992
to
1994
4
1995
to
1996
2
1997
to
1999
0
2000
to
2001
3
2002
to
2004
7
2005
to
2006
6
2007
to
2009
11
2010
to
2011
9
2012
to
2014
13
2015
to
2016
3