Lol, ok, here goes (first round anyways, lol...):
Lev 14 -> 15: 320 xp
15 -> 16: 360
16 -> 17: 350
17 -> 18: 470
18 -> 19: 500
19 -> 20: 520
20 -> 21: 500
21 -> 22: 750
22 -> 23: 730
23 -> 24: 730
24 -> 25: 750
25 -> 26: 790
26 -> 27: 900
27 -> 28: 900
28 -> 29: 1100
29 -> 30: 1100 xp