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1988
to
1989
1
1990
to
1991
2
1992
to
1994
14
1995
to
1996
13
1997
to
1999
10
2000
to
2001
15
2002
to
2004
26
2005
to
2006
22
2007
to
2009
32
2010
to
2011
3