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1983
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1984
1
1985
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1986
0
1987
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1989
0
1990
to
1991
1
1992
to
1994
2
1995
to
1996
0
1997
to
1999
0
2000
to
2001
2
2002
to
2004
0
2005
to
2006
0
2007
to
2009
1
2010
1