Rank	Countries/Territories	Count	Percent
1	United States	338	40.3%
2	Germany	121	14.4%
3	China	89	10.6%
4	France	28	3.3%
5	Netherlands	27	3.2%
6	Russia	22	2.6%
7	Japan	19	2.3%
8	Mongolia	18	2.1%
9	Canada	17	2%
10	United Kingdom	15	1.8%
11	Singapore	14	1.7%
12	Bulgaria	13	1.5%
13	India	12	1.4%
14	Cyprus	10	1.2%
15	Ghana	7	0.8%
16	Slovakia	7	0.8%
17	Turkey	7	0.8%
18	Taiwan	6	0.7%
19	Latvia	6	0.7%
20	Brazil	6	0.7%
21	Argentina	6	0.7%
22	Ireland	4	0.5%
23	Ukraine	4	0.5%
24	Portugal	4	0.5%
25	Sweden	3	0.4%
26	Israel	3	0.4%
27	Italy	3	0.4%
28	Bangladesh	3	0.4%
29	Belgium	2	0.2%
30	Australia	2	0.2%
31	Denmark	2	0.2%
32	Nigeria	2	0.2%
33	Switzerland	2	0.2%
34	Thailand	2	0.2%
35	Togo	1	0.1%
36	United Arab Emirates	1	0.1%
37	Qatar	1	0.1%
38	Romania	1	0.1%
39	Viet Nam	1	0.1%
40	Zimbabwe	1	0.1%
41	New Zealand	1	0.1%
42	South Africa	1	0.1%
43	Iran, Islamic Republic of	1	0.1%
44	Malaysia	1	0.1%
45	Mexico	1	0.1%
46	Korea, Republic of	1	0.1%
47	Egypt	1	0.1%
48	Greece	1	0.1%
49	Hong Kong	1	0.1%