Which year did J. K. Rowling start her plan for Harry Potter?
1990
1991
1991
1991
1996
1991
1996
1991
1996
1991
1996
1997
1991
1996
1997
1991
1996
1997
1991
1996
1997
1991
1996
1997
1995
1991
1996
1997
1995
1991
1996
1997
1995
1991
1996
1997
1998
1995
1991
1996
1997
1998
1992
1995
1991
1996
1997
1998
1992
1995
2000
1991
1996
1997
1998
1992
1995
2000
1991
1996
1997
1998
1992
1995
2000
1991
1996
1997
1998
1992
1995
2000
1991
1996
1997
1998
1992
1995
2000
1991
1996
1997
1998
1992
1995
2000
1996
1997
1994
1998
1992
1995
2000
1990
1996
1997
1994
1998
1992
1995
2000
1990
1997
1994
1998
1999
1992
1995
2000
1990
1993
1997
1994
1998
1999
1992
1995
2000
1990
1993
1997
1994
1998
1999
1992
1995
2000
1990
1993
1994
1998
1999
1992
1995
2000
1990
1993
1994
2001
1998
1999
1992
1995
2000
1990
1993
1994
2001
1998
1999
1992
1995
2000
1990
1993
1994
2002
2001
1998
1999
1992
1995
2000
1990
1993
1994
2002
2001
1998
1999
1992
2000
1990
1993
1994
2002
2001
1998
1999
1992
2000
1990
1993
1994
2002
2001
1998
1999
1992
2000
1990
1993
1994
2002
2001
1999
1992
2000
1996.
1990
1993