When was my Weatherby pump shotgun made?

Pump Shotgun Model : (Years of Production) / Serial Number Prefix Patrician® I Pump (Japan) : (1972 – 1974) / No Prefix Patrician® I Pump (Japan) : (1973 – 1975) / S0 Patrician® I Pump (Japan) : (1975 – 1976) / N - NS Patrician® II Pump (Japan) : (1976 -1981) / S - W Model 92 Pump (Japan) : (1982 – 1989) / NS PA-08 Pump 12 ga. (Turkey) : (2008 –2017) / TP PA-08 Pump 20 ga. (Turkey) : (2008 –2017) / TA