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1984
1
1985
to
1986
0
1987
to
1989
0
1990
to
1991
2
1992
to
1994
2
1995
to
1996
1
1997
to
1999
0
2000
to
2001
0
2002
to
2004
1
2005
to
2006
0
2007
to
2009
0
2010
1