How much can i realistically increase my bench press pr in a year

I'm 15, turning 16 in a month, i can bench 80 kg for 4 reps, my current pr is 85 kg, i was wondering what can i bench in a year if i really put a lot of work into it. And i was hoping someone with a good bench press strenght could dm me his program because i think my current program is not optimal for strenght