The government has decided to make the changes required in two stages, and this part covers only what the government is almost forced to do as a signatory to the 1976 international convention, which was to come into force in 1990, but whose implementation was later postponed to March 31, 1996, at the latest.

Can we draw the following conclusion?
1996 is when it ended

Pick from:
 (1). Yes.
 (2). It's impossible to say.
 (3). No.
(2).