Rank	Countries/Territories	Count	Percent
1	United States	263	35.7%
2	China	155	21.1%
3	Germany	69	9.4%
4	India	42	5.7%
5	Kazakhstan	26	3.5%
6	Italy	19	2.6%
7	Netherlands	19	2.6%
8	Japan	17	2.3%
9	Korea, Republic of	11	1.5%
10	Hong Kong	11	1.5%
11	Spain	10	1.4%
12	Singapore	9	1.2%
13	Ireland	7	1%
14	Czech Republic	7	1%
15	Turkey	6	0.8%
16	United Kingdom	6	0.8%
17	Brazil	4	0.5%
18	France	4	0.5%
19	Mongolia	4	0.5%
20	Romania	4	0.5%
21	Russia	4	0.5%
22	Portugal	3	0.4%
23	Cyprus	3	0.4%
24	Iran, Islamic Republic of	3	0.4%
25	Canada	3	0.4%
26	Australia	2	0.3%
27	Egypt	2	0.3%
28	Ethiopia	2	0.3%
29	Hungary	2	0.3%
30	Greece	2	0.3%
31	Switzerland	2	0.3%
32	Malaysia	2	0.3%
33	South Africa	2	0.3%
34	Uzbekistan	2	0.3%
35	Philippines	1	0.1%
36	Poland	1	0.1%
37	Lithuania	1	0.1%
38	Syrian Arab Republic	1	0.1%
39	Taiwan	1	0.1%
40	Senegal	1	0.1%
41	Costa Rica	1	0.1%
42	Austria	1	0.1%
43	Bhutan	1	0.1%