1999
2001
1991
2001
1991
2000
1989
2001
1998
1999
2001
1996
1991
2000
1999
1999
1990
1990
1993
1994
2008
2002
1997
1999
1990
1999
1999
2001
1991
1991
1991
1990
1992
1990
1997
1990
1989
1995
1988
1990
1990
1989
1998
1989
1992
1989
1991
1990
1990
2002
2002
1990
1990
2012
2000
2001
1999
1990
2001
2000
1989
2009
1998
1991
1990
1990
1989
1989
1991
1991
2001
1990
1989
1999
2003
1998
1990
2000
1997
1990
1990
2000
2000
1999
1990
1990
1998
1989
1990
1990
2001
1990
2001
1990
2001
1997
1990
2001
1997
2003
1992
1990
1990
1989
1989
1991
1989
1992
1989
1998
1999
1989
1991
1989
1990
1990
1999
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