Step 1: Identify the decision and terminology.
ASEAN’s decision to create the {ASEAN Free Trade Area (AFTA)} was taken at the 1992 Singapore Summit.
Step 2: Clarify why the listed years appear.
1996, 1999, 2003, 2010 correspond to later phases, expansions, or implementation targets in ASEAN economic integration—{not} the founding decision year.
Step 3: Exam tactic.
When all options are wrong, write ``Wrong option set—Correct year is 1992 (AFTA decision)’’, with a one-line justification as above.
Step 4: Conclude.
\[
\boxed{\text{Correct year: 1992 .}}
\]