1976
No.
browning used the last two digits of the year before the serial number on the 9mm from 1970 until 1976 so your 9mm was made in 1973
1989
None.
1969
your browning hi-power was made in 1974.
The serial number.
Call Browning.
1986
Belgium
1994
Browning has never released production numbers to the public