Rank	Countries/Territories	Count	Percent
1	United States	323	38.3%
2	China	165	19.6%
3	Germany	75	8.9%
4	India	49	5.8%
5	Kazakhstan	26	3.1%
6	Netherlands	24	2.8%
7	Italy	19	2.3%
8	Japan	17	2%
9	Spain	12	1.4%
10	Korea, Republic of	11	1.3%
11	Hong Kong	11	1.3%
12	Singapore	10	1.2%
13	Ireland	7	0.8%
14	Czech Republic	7	0.8%
15	Canada	6	0.7%
16	Turkey	6	0.7%
17	United Kingdom	6	0.7%
18	Australia	5	0.6%
19	France	5	0.6%
20	Romania	5	0.6%
21	Russia	4	0.5%
22	Moldova, Republic of	4	0.5%
23	Mongolia	4	0.5%
24	Brazil	4	0.5%
25	Cyprus	3	0.4%
26	Egypt	3	0.4%
27	Iran, Islamic Republic of	3	0.4%
28	Portugal	3	0.4%
29	Malaysia	2	0.2%
30	South Africa	2	0.2%
31	Hungary	2	0.2%
32	Ethiopia	2	0.2%
33	Greece	2	0.2%
34	Croatia	2	0.2%
35	Switzerland	2	0.2%
36	Uzbekistan	2	0.2%
37	Taiwan	2	0.2%
38	Syrian Arab Republic	1	0.1%
39	Costa Rica	1	0.1%
40	Austria	1	0.1%
41	Bhutan	1	0.1%
42	Senegal	1	0.1%
43	Philippines	1	0.1%
44	Poland	1	0.1%
45	Lithuania	1	0.1%