Rank	Countries/Territories	Count	Percent
1	United States	515	35.1%
2	China	464	31.6%
3	Germany	222	15.1%
4	France	35	2.4%
5	Hungary	26	1.8%
6	Korea, Republic of	22	1.5%
7	Canada	21	1.4%
8	Japan	20	1.4%
9	United Kingdom	19	1.3%
10	Singapore	14	1%
11	Australia	14	1%
12	Cyprus	13	0.9%
13	Netherlands	12	0.8%
14	Russia	9	0.6%
15	Mongolia	6	0.4%
16	Brazil	6	0.4%
17	Bulgaria	6	0.4%
18	Greece	5	0.3%
19	Hong Kong	5	0.3%
20	Bangladesh	4	0.3%
21	Argentina	3	0.2%
22	India	3	0.2%
23	Latvia	3	0.2%
24	Italy	3	0.2%
25	Taiwan	3	0.2%
26	Ukraine	2	0.1%
27	Spain	2	0.1%
28	Nepal	2	0.1%
29	Ireland	2	0.1%
30	Denmark	2	0.1%
31	Norway	1	0.1%
32	Palestine, State of	1	0.1%
33	Romania	1	0.1%
34	Sweden	1	0.1%
35	Switzerland	1	0.1%