1996
1989
1989
1999
1989
1991
1990
1989
1996
1991
1989
1989
1988
1989
1993
1995
1989
1990
1988
1989
1988
1988
1987
2001
1996
1991
1988
1997
1991
1989
1989
1991
2001
1990
2002
2000
1988
2010
1970
1989
1988
1970
1989
1989
1997
1998
2017
1990
1990
1994
1994
1994
1995
1990
1989
1990
1992
1990
1989
1993
1994
1992
1989
1998
1995
2001
1994
2001
2004
2003
1995
1995
1992
1996
1992
1992
2001
2002
1992
1992
1989
1996
1989
1997
1990
1989
1993
1988
1989
1991
1990
1992
1991
1989
1989
1989
1994
1988
1989
2001
1991
1990
1994
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