Rank	Countries/Territories	Count	Percent
1	United States	207	46.1%
2	China	92	20.5%
3	Germany	31	6.9%
4	Korea, Republic of	20	4.5%
5	Japan	11	2.4%
6	France	9	2%
7	Netherlands	8	1.8%
8	Singapore	5	1.1%
9	Switzerland	5	1.1%
10	Romania	5	1.1%
11	United Kingdom	4	0.9%
12	Poland	4	0.9%
13	Bulgaria	4	0.9%
14	Cyprus	3	0.7%
15	Hong Kong	3	0.7%
16	Israel	3	0.7%
17	Peru	2	0.4%
18	Philippines	2	0.4%
19	Libya	2	0.4%
20	Lithuania	2	0.4%
21	Syrian Arab Republic	2	0.4%
22	South Africa	2	0.4%
23	Ireland	2	0.4%
24	Argentina	2	0.4%
25	Australia	2	0.4%
26	Bangladesh	2	0.4%
27	Russia	2	0.4%
28	Viet Nam	1	0.2%
29	Brazil	1	0.2%
30	Canada	1	0.2%
31	Kenya	1	0.2%
32	Hungary	1	0.2%
33	India	1	0.2%
34	Iran, Islamic Republic of	1	0.2%
35	Spain	1	0.2%
36	Sweden	1	0.2%
37	Taiwan	1	0.2%
38	Ukraine	1	0.2%
39	Norway	1	0.2%
40	Pakistan	1	0.2%