I have a table with values

empno year amt
A 2004 45.23
A 2005 54.56
A 2006 89.56
B 2004 44.33
B 2005 22.15
B 2006 48.98
C 2004 55.00
C 2005 56.13
C 2006 44.56


How can I have a table that will appear like this
empno 2004 2005 2006
A 45.23 54.56 89.56
B 44.33 22.15 48.98
C 55.00 56.13 44.56