1991
1991
2001
1995
1988
1988
2005
2007
2006
1989
2003
1989
1998
1995
2005
1990
2006
1990
1988
2005
1999
1998
1992
1996
1988
1990
1991
2006
2006
1993
2002
1999
1998
1987
1987
1997
1989
1987
1970
1970
2005
1993
2010
1986
1989
1993
1993
1998
1994
1998
1992
1992
1999
1991
1991
1993
1987
1988
2002
1990
1994
1989
2002
2000
2006
1996
2008
1991
1990
1991
1992
2005
1987
2000
1989
1992
2008
2002
2007
2007
2009
2007
1991
1991
1990
1998
1995
1990
1999
1992
1990
1997
1993
2005
2006
1989
2003
1991
1997
2004
2005
1991
1990
1992
2006
2002
2008
2008
1991
1991
1986
2006
1990
1991
1991
2002
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