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1985
to
1986
4
1987
to
1989
11
1990
to
1991
11
1992
to
1994
11
1995
to
1996
8
1997
to
1999
10
2000
to
2001
8
2002
to
2004
13
2005
to
2006
4
2007
to
2009
20
2010
to
2011
6