Experience

Experience is accrued by defeating enemies and accomplishing missions.

Experience Table

Level	Incremental	Cumulative	Level	Incremental	Cumulative
1	n/a	0	26	85,200	446,119
2	106	106	27	108,000	554,119
3	337	443	28	135,000	689,119
4	582	1,025	29	166,650	855,769
5	800	1,825	30	203,400	1,059,169
6	1,237	3,062	31	254,000	1,313,169
7	1,575	4,637	32	314,600	1,627,769
8	1,950	6,587	33	386,400	2,014,169
9	2,680	9,267	34	470,600	2,484,769
10	3,125	12,392	35	571,200	3,055,969
11	3,600	15,992	36	701,500	3,757,469
12	4,995	20,987	37	854,700	4,612,169
13	6,405	27,392	38	1,036,600	5,648,769
14	7,400	34,792	39	1,250,200	6,898,969
15	9,093	43,885	40	1,502,550	8,401,519
16	11,184	55,069	41	1,692,900	10,094,419
17	13,000	68,069	42	1,907,550	12,001,969
18	15,950	84,019	43	2,150,550	14,152,519
19	19,200	103,219	44	2,421,900	16,574,419
20	23,400	126,619	45	2,729,700	19,304,119
21	28,000	154,619	46	3,078,000	22,382,119
22	36,000	190,619	47	3,470,850	25,852,969
23	45,000	235,619	48	3,912,300	29,765,269
24	56,000	291,619	49	4,410,450	34,175,719
25	69,300	360,919	50	4,973,400	39,149,119

Source: http://faqs.ign.com/articles/539/539615p1.html