Participant Countries

No.	Country Name	1st IJSO	2nd IJSO	3rd IJSO	4th IJSO	5th IJSO
1	Afganistan			+	+	+
2	Albania	+		+	+
3	Argentina			+	+	+
4	Australia				Obs	+
5	Austria					Obs
6	Azerbaijan	+	+	+	+	+
7	Belgium					+
8	Bolivia					+
9	Brazil	+	+	+	+	+
10	Brunei Darussalam	+	+			+
11	Bulgaria					+
12	Chinese Taipei	+	+	+	+	+
13	Croatia	+	+		+
14	Czech Republic					Obs
15	Denmark					Obs
16	Estonia	+	+	+	+	+
17	Germany	+	+	+	+	+
18	Great Britain		+	+	+	+
19	Hong Kong, China			+	+	+
20	Hungary	+	+	+	+	+
21	India	+	+	+	+	+
22	Indonesia	+	+	+	+	+
23	Iran	Obs				+
24	Ireland	+	+	+	+	+
25	Japan					Obs
26	Jordan	+
27	Kazakhstan	+		+	+	+
28	Kenya	+	+	+	+	+
29	Kingdom of Cambodia	+	+	+		+
30	Kuwait		+	+		+
31	Lithuania				Obs	+
32	Madagaskar		+
33	Malaysia					+
34	Maldives					Obs
35	Mexico	+	+	+	+	+
36	Moldova	+	+	+
37	Mongolia		+	+	+	+
38	Myanmar				+	+
39	Nigeria	+	+	+	+	+
40	Philippine	+	+		+	+
41	Rep. of Ghana	+	+	+	+	+
42	Romania	+	+	+	+	+
43	Russia	+	+	+	+	+
44	Saudi Arabia	+	+		+
45	Serbia	+	+	+	+	+
46	Singapore				+	+
47	Slovakia	+			+	+
48	South Africa		+			+
49	South Korea	+	+	+	+	+
50	Sri Lanka	+	+		+	+
51	Thailand	+	+	+	+	+
52	The Netherlands		+	+	+	+
53	Turkey	+
54	United Arab Emirates		+		+	+
55	United State of America (USA)					Obs
56	Vietnam	+			+
57	Zimbabwe		+	+	+	+
	Guest Team (YPJ-Papua Indonesia)					+

	Number of Team/Country	33	33	30	38	50